Supporting Information
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- Ευρυβία Ἰεζάβελ Σπανός
- 5 χρόνια πριν
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1 Electronic Supplementary Material (ESI) for rganic & Biomolecular Chemistry. This journal is The Royal Society of Chemistry 2018 Supporting Information Direct C4-H osphonation of 8-Hydroxyquinoline Derivatives Employing otoredox Catalysis and Silver Catalysis Xiaoxue Su, a Fan Yang,*,a Yusheng Wu,*,b and Yangjie Wu*,a a The College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and rganic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou , PR China yangf@zzu.edu.cn; wyj@zzu.edu.cn b Tetranov Biopharm, LLC. & Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou , PR China yusheng.wu@tetranovglobal.com Table of Contents 1. General Information S2 2. Preparation of Substrates S2 3. ptimization of Reaction Conditions S2 4. Typical Procedure for the Products S4 5. Characterization Data of the Products S4 6. References S14 7. The Single Crystal X-ray Diffraction Study of 3aa S15 8. The Experiment of Trapping the osphonyl Radical S16 9. Copies of 1 H, 13 C, 31 P and 19 F NMR Spectra for the Products S16 S1
2 1. General Information 1 H, 13 C and 31 P NMR spectra were recorded on a Bruker DPX-400 spectrometer using CDCl 3 as the solvent and TMS as an internal standard. Melting points were measured using a WC-1 microscopic apparatus and are uncorrected. Mass spectra were measured on an LC-MSD-Trap-XCT instrument. High resolution mass spectra were ensured on a MALDI-FTMS. All solvents were used directly without further purification. Petroleum ether, ethyl acetate and hexane were used for column chromatography. Chemical shift multiplicities are represented as follows: (s = singlet, d = doublet, t = triplet, m = multiplet, dd = double doublet, td = triplet doublet). Unless otherwise mentioned, all materials were commercially obtained and used without further purification. 2. Preparation of Substrates All of the esters substrates were prepared from the corresponding acids and 8-hydroxyquinoline according to the reported procedure ptimization of Reaction Conditions A 20 ml Schlenk tube was equipped with a magnetic stir bar and charged with 8-hydroxylquinoline ester 1a (24.9 mg, 0.1 mmol), diphenylphosphine oxide 2a (0.2 mmol, 2.0 equiv), photocatalyst (0.003 mmol, 3 mol%), AgX (0.01 mmol, 10 mol%), oxidant (0.2 mmol, 2 equiv), and solvent (1.0 ml). The resulting mixture was stirred under the irradiation of 26 W household light under nitrogen at room temperature for 6 h. Upon completion, the mixture was added into H 2 (20 ml) and extracted with CH 2 Cl 2 (20 ml) three times. The combined organic layer was dried over anhydrous Na 2 S 4 and filtered. After evaporation of the solvent under vacuum, the residue was purified by column chromatography on silica gel ( mesh) using CH 2 Cl 2 /ethyl acetate as an eluent (2:1, V/V) to afford the pure product 3aa. Table S1 Screening of Reaction Conditions a + HP eosin Y (3 mol%) Ag 2 (10 mol%) K 2 S 2 8 (2.0 equiv) Additive (1.0 equiv) CH 3 CN/H 2 (3:2) N rt, nitrogen, 6 h household light 1a 2a 3aa N P Entry otocatalyst AgX xidant Solvent Addition yield (%) b 1 acid red 94 Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) - 50% 2 acid red 94 AgAc K 2 S 2 8 CH 3 CN/H 2 (3:2) - trace 3 acid red 94 AgI K 2 S 2 8 CH 3 CN/H 2 (3:2) - trace 4 acid red 94 AgN 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) - 37% 5 acid red 94 Ag 3 P 4 K 2 S 2 8 CH 3 CN/H 2 (3:2) - trace 6 acid red 94 AgN 3 K 2 S 2 8 CH 3 CN/H 2 (3:2) - 44% 7 acid red 94 Ag 2 C 3 K 2 S 2 8 CH 3 CN/H 2 (3:2) - 48% 8 acid red 94 Ag 2 S 4 K 2 S 2 8 CH 3 CN/H 2 (3:2) - trace 9 acid red 94 AgTf K 2 S 2 8 CH 3 CN/H 2 (3:2) - trace 10 eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) - 74% S2
3 11 eosin B Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) - 43% 12 [Ru(bpy) 3 ]Cl 2 Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) - 42% 13 alizarin red S Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) - 20% 14 Ir(bpy) 2 Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) - 43% 15 eosin Y Ag 2 NM CH 3 CN/H 2 (3:2) - trace 16 eosin Y Ag 2 BQ CH 3 CN/H 2 (3:2) - trace 17 eosin Y Ag 2 TBHP CH 3 CN/H 2 (3:2) - 38% 18 eosin Y Ag 2 DTBP CH 3 CN/H 2 (3:2) - 20% 19 eosin Y Ag 2 TBPB CH 3 CN/H 2 (3:2) - trace 20 eosin Y Ag 2 (NH 4 ) 2 S 2 8 CH 3 CN/H 2 (3:2) - 45% 21 eosin Y Ag 2 Na 2 S 2 8 CH 3 CN/H 2 (3:2) - 57% 22 eosin Y Ag 2 I(Ac) 2 CH 3 CN/H 2 (3:2) - NR 23 eosin Y Ag 2 - CH 3 CN/H 2 (3:2) - NR 24 eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) NaAC trace 25 eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) PivNa trace 26 eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) K 3 P 4 NR 27 eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) Na 2 C 3 trace 28 eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) PivH trace 29 eosin Y Ag 2 K 2 S 2 8 DCE - NR 30 eosin Y Ag 2 K 2 S 2 8 Dioxane - NR 31 eosin Y Ag 2 K 2 S 2 8 Acetone - NR 32 eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (1:1) - 39% 33 eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (2:1) - 10% 34 eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (2:3) - 18% 35 eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (10:0) - NR 36 eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (0:10) - 22% 37 eosin Y Ag 2 K 2 S 2 8 Acetone/H 2 (1:1) - 54% 38 c eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) - 60% 39 d eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) - <5% 40 e eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) - <5% 41 f eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) - 20% 42 fg eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) - <5% 43 fh eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) - <5% 44 fi - Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) - NR 45 j eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) - 78% 46 k eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) - 65% 47 l eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) - 34% 48 m eosin Y Ag 2 K 2 S 2 8 CH 3 CN/H 2 (3:2) - NR a Reaction conditions: 1a (0.1 mmol), 2a (0.2 mmol), AgX (10 mol%), photocatalyst (3 mol%, 26 W household light), oxidant (0.2 mmol, 2 equiv), additive (1.0 equiv), solvent (1.0 ml) under nitrogen for 8 h. b Isolated yield. c Under green LED. d Under red LED. e Under blue LED. f Under dark. g For Ag 2 (1.0 equiv). h For Ag 2 (2.0 equiv). i For no eosin Y. j For 6 h, k For 10 h, l Under air, m Under 2. S3
4 4. Typical Procedure for the Products (a) Procedure for the synthesis of 3: A 20 ml Schlenk tube was equipped with a magnetic stir bar and charged with 8-hydroxylquinoline ester 1 (0.1 mmol), diaryphosphine oxide 2 (0.2 mmol), eosin Y (2.1 mg, mmol, 3 mol%), K 2 S 2 8 (0.2 mmol, 2 equiv), Ag 2 (2.3 mg, 0.01 mmol, 10 mol%) in CH 3 CN/H 2 (3:2) (1.5 ml). The resulting mixture was stirred under the irradiation of 26 W household light under nitrogen at room temperature for 6 h. Upon completion, the mixture was added into H 2 (20 ml) and extracted with CH 2 Cl 2 (20 ml) three times. The combined organic layer was dried over anhydrous Na 2 S 4 and filtered. After evaporation of the solvent under vacuum, the residue was purified by column chromatography on silica gel ( mesh) using CH 2 Cl 2 /ethyl acetate as an eluent (2:1, V/V) to afford the pure product 3. (b) Procedure for the hydrolysis of 4a: NaH P EtH P H N 80 o C, air, 12 h N hydrolysis 3aa 4a, 77% To a solution of 3aa (0.2 mmol) in ethyl alcohol (3 ml), NaH (0.22 mmol, 1.1 equiv) was added, and the resulting mixture was stirred at 80 o C for 12 h. The solvent was removed by vacuum, and then 3 ml H 2 was added to the residue. The mixture was extracted with CH 2 Cl 2 (3 5 ml). The combined organic layer was dried over anhydrous Na 2 S 4 and filtered. After evaporation of the solvent under vacuum, the residue was purified by column chromatography on silica gel ( mesh) using CH 2 Cl 2 /ethyl acetate (2:1, V/V) as an eluent to afford the pure product 4a. 5. Characterization Data of the Products 4-(diphenylphosphoryl)quinolin-8-yl benzoate (3aa): N P 3aa Light yellow solid (78% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.85 (t, J= 4.0 Hz, 1H), (m, 1H), (m, 2H), (m, 15H), 7.15 (dd, J= 15.1, 4.3 Hz, 1H); 13 C NMR (100 MHz, CDCl 3 ) δ: 165.5, (d, J C-P = 11.5 Hz), (d, J C-P = 2.8 Hz), (d, J C-P = 7.1 Hz), (d, J C-P = 94.3 Hz), 133.7, (d, J C-P = 2.8 Hz), 132,0 (d, J C-P = 10.0 Hz), (d, J C-P = Hz), 130.6, 129.4, (d, J C-P = 12.5 Hz), 128.9, 128.6, 127.7, (d, J C-P = 9.3 Hz), (d, J C-P = 5.6 Hz), 122.2; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.7; HRMS (ESI- TF): Calcd for C 28 H 21 N 3 P [M+H] + : , Found: (di-p-tolylphosphoryl)quinolin-8-yl benzoate (3ab): S4
5 N P(p-MeC 6 H 4 ) 2 3ab Light yellow solid (66% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.84 (t, J= 3.8 Hz, 1H), 8.53 (d, J= 7.9 Hz, 1H), 8.33 (d, J= 7.6 Hz, 2H), (m, 1H), (m, 8H), (m, 4H), 7.15 (dd, J= 14.8, 4.2 Hz, 1H), 2.42 (s, 6H); 13 C NMR (100 MHz, CDCl 3 ) δ: 165.5, (d, J C-P = 11.5 Hz), (d, J C-P = 2.6 Hz), (d, J C-P = 2.8 Hz), (d, J C-P = 7.0 Hz), (d, J C-P = 93.9 Hz), 133.7, (d, J C-P = 10.4 Hz), 130.6, (d, J C-P = 12.7 Hz), (d, J C-P = 8.0 Hz), (d, J C-P = 6.8 Hz), 128.6, (d, J C-P = Hz), 127.6, (d, J C-P = 9.4 Hz), (d, J C-P = 5.5 Hz), 122.2, 21.7; 31 P NMR (163 MHz, CDCl 3 ) δ: 31.1; HRMS (ESI-TF): Calcd for C 30 H 25 N 3 P [M+H] + : , Found: (bis(3,5-dimethylphenyl)phosphoryl)quinolin-8-yl benzoate (3ac): N P(m,m'-diMeC 6 H 3 ) 2 3ac Light yellow solid (53% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.85 (t, J= 3.9 Hz, 1H), (m, 1H), (m, 2H), (m, 1H), (m, 4H), 7.29 (d, J= 12.6 Hz, 4H), 7.21 (s, 2H), 7.16 (dd, J= 14.8, 4.2 Hz, 1H), 2.33 (s, 12H); 13 C NMR (100 MHz, CDCl 3 ) δ: 165.5, (d, J C-P = 11.5 Hz), (d, J C-P = 2.5 Hz), (d, J C-P = 7.1 Hz), (d, J C-P = 92.7 Hz), (d, J C-P = 13.0 Hz), (d, J C-P = 2.8 Hz), 133.7, (d, J C-P = Hz), 130.7, (d, J C-P = 10.0 Hz), 129.4, (d, J C-P = 6.6 Hz), 128.6, 127.5, (d, J C-P = 9.5 Hz), (d, J C-P = 5.4 Hz), 122.1, 21.4; 31 P NMR (163 MHz, CDCl 3 ) δ: 31.3; HRMS (ESI-TF): Calcd for C 32 H 29 N 3 P [M+H] + : , Found: (di-p-tolylphosphoryl)quinolin-8-yl 3-methylbenzoate (3ad): N P(p-MeC 6 H 4 ) 2 3ad Light yellow solid (48% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.84 (t, J= 3.8 Hz, 1H), (m, 1H), (m, 2H), (m, 6H), (m, 2H), (m, 4H), 7.14 (dd, J= 14.8, 4.2 Hz, 1H), 2.45 (s, 3H), 2.42 (s, 6H); 13 C NMR (100 MHz, CDCl 3 ) δ: 165.6, (d, J C-P = 11.3 Hz), (d, J C-P = 2.7 Hz), (d, J C-P = 2.7 Hz), (d, J C-P = 7.0 Hz), (d, J C-P = 93.7 Hz), 138.4, 134.5, (d, J C-P = 10.3 Hz), 131.0, (d, J C-P = 12.8 Hz), 129.3, (d, J C-P = 6.6 Hz), 128.5, 127.7, 127.5, 127.5, (d, J C-P = 9.3 Hz), S5
6 (d, J C-P = 5.4 Hz), 122.1, 21.7, 21.4; 31 P NMR (163 MHz, CDCl 3 ) δ: 31.0; HRMS (ESI-TF): Calcd for C 31 H 27 N 3 P [M+H] + : , Found: (diphenylphosphoryl)quinolin-8-yl 2-methylbenzoate (3ba): N P 3ba Light yellow solid (67% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.87 (t, J= 4.0 Hz, 1H), (m, 1H), (m, 1H), (m, 13H), (m, 2H), 7.16 (dd, J= 14.9, 4.2 Hz, 1H), 2.71 (s, 3H); 13 C NMR (100 MHz, CDCl 3 ) δ: 166.2, (d, J C-P = 11.3 Hz), (d, J C-P = 2.8 Hz), (d, J C-P = 7.2 Hz),141.5, (d, J C-P = 93.7 Hz), 132.8, (d, J C-P = 2.6 Hz), 132,0 (d, J C-P = 10.0 Hz),131.9,131.7, (d, J C-P = Hz), (d, J C-P = 12.5 Hz), 128.9, 128.6, 127.7, (d, J C-P = 9.4 Hz), 126.0,125.6 (d, J C-P = 5.6 Hz), 122.3, 21.9; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.6; HRMS (ESI-TF) Calcd for C 29 H 23 N 3 P [M+H] + : , Found: (diphenylphosphoryl)quinolin-8-yl 3-methylbenzoate (3ca): N P 3ca Light yellow solid (68% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.85 (t, J= 4.0 Hz, 1H), (m, 1H), (m, 2H), (m, 15H), 7.15 (dd, J= 14.9, 4.2 Hz, 1H), 2.46 (s, 3H); 13 C NMR (100 MHz, CDCl 3 ) δ: 165.6, (d, J C-P = 11.4 Hz), (d, J C-P = 2.7 Hz), (d, J C-P = 7.3 Hz), (d, J C-P = 94.0 Hz),138.5, 134.5, (d, J C-P = 2.7 Hz), 132,0 (d, J C-P = 10.0 Hz), (d, J C-P = Hz), 131.0, 129.3, (d, J C-P = 12.5 Hz), 128.9, 128.5, 127.7, 127.7, (d, J C-P = 9.5 Hz),125.6 (d, J C-P = 5.5 Hz), 122.2, 21.3; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.6; HRMS (ESI-TF) Calcd for C 29 H 23 N 3 P [M+H] + : , Found: (diphenylphosphoryl)quinolin-8-yl 4-methylbenzoate (3da): N P 3da Light yellow solid (66% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.85 (t, J= 4.0 Hz, 1H), (m, 1H), (m, 1H), (m, 13H), (m, 2H), 7.14 (dd, J= 14.9, 4.2 Hz, 1H), 2.47 (s, 3H); 13 C NMR (100 MHz, CDCl 3 ) δ: 165.5, (d, J C-P = 11.4 Hz), (d, J C-P = 3.2 Hz), 144.5, (d, J C-P = 7.0 Hz), (d, J C-P = 94.1 Hz), (d, J C-P = S6
7 2.3 Hz), 132,0 (d, J C-P = 10.0 Hz), (d, J C-P = Hz),129.4, (d, J C-P = 12.4 Hz), 127.7, 126.7, 126.6, 126.6, (d, J C-P = 5.4 Hz), 122.3, 21.8; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.6; HRMS (ESI-TF) Calcd for C 29 H 23 N 3 P [M+H] + : , Found: (diphenylphosphoryl)quinolin-8-yl 2-methoxybenzoate (3ea): 3ea N P Light yellow solid (58% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.87 (t, J= 4.0 Hz, 1H), 8.48 (d, J= 8.2 Hz, 1H), (m, 1H), (m, 13H), 7.15 (dd, J= 15.0, 4.2 Hz, 1H), (m, 2H), 3.93 (s, 3H); 13 C NMR (100 MHz, CDCl 3 ) δ: 164.2,160.3, (d, J C-P = 11.4 Hz), (d, J C-P = 2.8 Hz), (d, J C-P = 7.2 Hz),139.1, 138.1, , 132.9, (d, J C-P = 2.6 Hz), 132,0 (d, J C-P = 10.1 Hz),132.0, (d, J C-P = Hz), (d, J C-P = 12.3 Hz), 128.8, 127.6, (d, J C-P = 9.4 Hz), (d, J C-P = 5.4 Hz), 122.4, (d, J C-P = Hz) 112.3, 56.1; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.7; HRMS (ESI-TF) Calcd for C 29 H 23 N 4 P [M+H] + : , Found: (diphenylphosphoryl)quinolin-8-yl 4-methoxybenzoate (3fa): 3fa N P Light yellow solid (61% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.85 (t, J= 4.0 Hz, 1H), (m, 1H), (m, 2H), (m, 4H), (m, 8H), 7.14 (dd, J= 15.0, 4.2 Hz, 1H), (m, 2H), 3.90 (s, 3H); 13 C NMR (100 MHz, CDCl 3 ) δ: 165.2, 164.0, (d, J C-P = 11.5 Hz), (d, J C-P = 2.9 Hz), (d, J C-P = 7.2 Hz), 139.2, 138.3, 132.7, (d, J C-P = 2.7 Hz), 132,0 (d, J C-P = 10.0 Hz), (d, J C-P = Hz), (d, J C-P = 12.4 Hz), 127.7, (d, J C-P = 9.4 Hz), (d, J C-P = 5.4 Hz), (d, J C-P = 63.4 Hz), 55.6; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.6; HRMS (ESI-TF) Calcd for C 29 H 23 N 4 P [M+H] + : , Found: (diphenylphosphoryl)quinolin-8-yl 3,5-dimethoxybenzoate (3ga): N P 3ga Light yellow solid (60% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.86 (t, J= 4.0 Hz, S7
8 1H), (m, 1H), (m, 4H), (m, 8H), 7.48 (s, 1H), 7.47 (s, 1H), 7.15 (dd, J= 14.9, 4.2 Hz, 1H), 6.75 (t, J= 2.4 Hz, 1H), 3.90 (s, 6H); 13 C NMR (100 MHz, CDCl 3 ) δ: 165.2, 160.8, (d, J C-P = 11.4 Hz), (d, J C-P = 2.8 Hz), (d, J C-P = 7.2 Hz), 139.2, 138.3, (d, J C-P = 2.7 Hz), 132,0 (d, J C-P = 10.0 Hz), (d, J C-P = Hz), 131.1, (d, J C-P = 12.4 Hz), 127.7, (d, J C-P = 9.4 Hz), (d, J C-P = 5.4 Hz), 122.2, 108.0, 106.7, 55.7; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.6; HRMS (ESI-TF) Calcd for C 30 H 25 N 3 P [M+H] + : , Found: (diphenylphosphoryl)quinolin-8-yl 2-fluorobenzoate (3ha): F 3ha N P Light yellow solid (63% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.89 (t, J= 3.9 Hz, 1H), 8.54 (d, J= 8.2, 1H), (m, 1H), (m, 4H), (m, 4H), (m, 5H), (m, 1H), (m, 1H),7.18 (dd, J= 14.9, 4.2 Hz, 1H); 13 C NMR (100 MHz, CDCl 3 ) δ: 163.9, (d, J C-F = 3.9 Hz), 161.3, (d, J C-P = 11.4 Hz), (d, J C-P = 2.7 Hz), (d, J C-F = 7.2 Hz), (d, J C-P = 93.9 Hz), (d, J C-P = 9.1 Hz), 133.0, (d, J C-P = 2.6 Hz), (d, J C-P = 9.8 Hz), (d, J C-P = Hz), (d, J C-P = 12.4 Hz), 127.7, (d, J C-P = 9.4 Hz), (d, J C-P = 5.4 Hz), (d, J C-P = 4.0 Hz), 122.2, (d, J C-P = 9.2 Hz), (d, J C-F = 21.9 Hz); 31 P NMR (163 MHz, CDCl 3 ) δ: 30.7; 19 F NMR (376 MHz, CDCl 3 ) δ: ; HRMS (ESI-TF): Calcd for C 28 H 20 FN 3 P [M+H] + : , Found: (diphenylphosphoryl)quinolin-8-yl 3-fluorobenzoate (3ia): N P F 3ia Light yellow solid (66% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.85 (t, J= 3.8 Hz, 1H), 8.53 (d, J= 8.0, 1H), 8.11 (d, J= 7.7, 1H), 8.00 (d, J= 8.9, 1H), (m, 4H), (m, 3H), (m, 6H), (m, 1H), 7.16 (dd, J= 15.0, 4.1 Hz, 1H); 13 C NMR (100 MHz, CDCl 3 ) δ: (d, J C-F = 2.9 Hz), (d, J C-F = Hz), 157.2, (d, J C-P = 11.5 Hz), (d, J C-P = 3.0 Hz), (d, J C-F = 7.2 Hz), (d, J C-P = 94.1 Hz), 132,7 (d, J C-P = 2.7 Hz), (d, J C-P = 10.1 Hz), (d, J C-P = Hz), (d, J C-P = 7.7 Hz), (d, J C-P = 12.4 Hz), 127.7, (d, J C-P = 9.4 Hz), (d, J C-F = 3.0 Hz), (d, J C-P = 5.5 Hz), 122.2, (d, J C-P = 21.1 Hz), (d, J C-F = 23.0 Hz), 115.6; 31 P NMR (163 MHz, CDCl 3 ) δ: 31.0; 19 F NMR (376 MHz, CDCl 3 ) δ: ; HRMS (ESI-TF): Calcd for C 28 H 20 FN 3 P [M+H] + : , Found: S8
9 4-(diphenylphosphoryl)quinolin-8-yl 4-fluorobenzoate (3ja): F N P 3ja Light yellow solid (65% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.87 (t, J= 3.9Hz, 1H), 8.54 (d, J= 7.3, 1H), (m, 2H), (m, 4H), (m, 4H), (m, 5H), (m, 1H), 7.17 (dd, J= 14.9, 4.2 Hz, 1H); 13 C NMR (100 MHz, CDCl 3 ) δ: 167.5, 165.0, 164.5, (d, J C-P = 11.3 Hz), (d, J C-P = 2.5 Hz), (d, J C-F = 7.1 Hz), (d, J C-P = 93.8 Hz), (d, J C-P = 9.4 Hz), (d, J C-P = 2.4 Hz), (d, J C-P = 9.9 Hz), (d, J C-P = Hz), (d, J C-P = 12.3 Hz), 127.7, (d, J C-P = 9.4 Hz), (d, J C-P = 5.4 Hz), (d, J C-P = 2.8 Hz), 122.2, (d, J C-P = 21.9 Hz); 31 P NMR (163 MHz, CDCl 3 ) δ: 30.7; 19 F NMR (376 MHz, CDCl 3 ) δ: ; HRMS (ESI-TF): Calcd for C 28 H 20 FN 3 P [M+H] + : , Found: (diphenylphosphoryl)quinolin-8-yl 2-chlorobenzoate (3ka): Cl 3ka N P Light yellow (66% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.88 (t, J= 4.0 Hz, 1H), 8.52 (d, J= 8.4 Hz, 1H), (m, 1H), (m, 4H), (m, 3H), (m, 7H), (m, 1H), 7.18 (dd, J= 14.9, 4.2 Hz, 1H); 13 C NMR (100 MHz, CDCl 3 ) δ: 163.6, (d, J C-P = 11.5 Hz), (d, J C-P = 2.8 Hz), (d, J C-P = 7.2 Hz), (d, J C-P = 93.9 Hz), 134.8, 133.3, (d, J C-P = 2.0 Hz), 132.6, 132,0 (d, J C-P = 9.9 Hz), 131.4, (d, J C-P = Hz), (d, J C-P = 12.4 Hz), 128.9, 127.6, 126.8, 126.8, (d, J C-P = 9.5 Hz), (d, J C-P = 5.4 Hz), 122.2; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.6; HRMS (ESI-TF): Calcd for C 28 H 20 ClN 3 P [M+H] + : , Found: (diphenylphosphoryl)quinolin-8-yl 3-chlorobenzoate (3la): N P Cl 3la Light yellow solid (65% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.85 (t, J= 4.0 Hz, 1H), (m, 1H), (m, 1H), (m, 1H), (m, 4H), (m, 3H), (m, 7H), 7.15 (dd, J= 14.9, 4.2 Hz, 1H); 13 C NMR (100 MHz, CDCl 3 ) δ: 164.2, S9
10 149.2 (d, J C-P = 11.3 Hz), (d, J C-P = 2.9 Hz), (d, J C-P = 7.0 Hz), (d, J C-P = 93.7 Hz), 133.7, (d, J C-P = 2.6 Hz), 132,0 (d, J C-P = 10.0 Hz), 131.5, 131.2, (d, J C-P = Hz), 130.3, (d, J C-P = 3.7 Hz), 129.3, (d, J C-P = 12.3 Hz), 127.7, (d, J C-P = 3.9 Hz), (d, J C-P = 9.4 Hz), (d, J C-P = 5.5 Hz), 122.1; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.5; HRMS (ESI-TF): Calcd for C 28 H 20 ClN 3 P [M+H] + : , Found: (diphenylphosphoryl)quinolin-8-yl 4-chlorobenzoate (3ma): Cl 3ma N P Light yellow solid (63% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.84 (t, J= 3.9 Hz, 1H), (m, 1H), (m, 2H), (m, 4H), (m, 2H), (m, 1H), (m, 7H), 7.15 (dd, J= 14.9, 4.2 Hz, 1H); 13 C NMR (100 MHz, CDCl 3 ) δ: 164.6, (d, J C-P = 11.5 Hz), (d, J C-P = 2.9 Hz), (d, J C-P = 7.1 Hz), 140.2, (d, J C-P = 93.6 Hz), (d, J C-P = 2.8 Hz), 132.1, 132,0 (d, J C-P = 1.8 Hz), (d, J C-P = Hz), 129.0, 129.0, 128.9, 127.9, 127.6, (d, J C-P = 9.5 Hz), (d, J C-P = 5.5 Hz), 122.2; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.6; HRMS (ESI-TF): Calcd for C 28 H 20 ClN 3 P [M+H] + : , Found: (diphenylphosphoryl)quinolin-8-yl 3-bromobenzoate (3na): N P Br 3na Light yellow solid (49% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.84 (t, J= 4.0 Hz, 1H), (m, 1H), (m, 1H), (m, 1H), (m, 1H), (m, 4H), (m, 2H), 7.56 (m, 1H), (m, 5H), 7.42 (t, J= 7.9 Hz, 1H), 7.16 (dd, J= 14.9, 4.2 Hz, 1H); 13 C NMR (100 MHz, CDCl 3 ) δ: 164.1, (d, J C-P = 11.5 Hz), (d, J C-P = 2.8 Hz), (d, J C-P = 7.2 Hz), (d, J C-P = 93.8 Hz), 136.6, 133.5, (d, J C-P = 2.6 Hz), 132,0 (d, J C-P = 9.9 Hz), 131.3, (d, J C-P = Hz), 130.2, 129.1, (d, J C-P = 12.3 Hz), 129.0, 127.6, (d, J C-P = 9.4 Hz), (d, J C-P = 5.5 Hz), 122.7, 122.1; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.6; HRMS (ESI-TF): Calcd for C 28 H 20 BrN 3 P [M+H] + : , Found: (diphenylphosphoryl)quinolin-8-yl 4-bromobenzoate (3oa): Br N P 3oa S10
11 Light yellow solid (54% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.84 (t, J= 3.9 Hz, 1H), (m, 1H), (m, 2H), (m, 7H), (m, 2H), 7.56 (m, 1H), (m, 5H), 7.15 (dd, J= 14.9, 4.2 Hz, 1H); 13 C NMR (100 MHz, CDCl 3 ) δ: (d, J C-P = 11.3 Hz), (d, J C-P = 2.7 Hz), (d, J C-P = 7.2 Hz), (d, J C-P = 93.9 Hz), (d, J C-P = 2.8 Hz), 132.1, 132.0, 132.0, (d, J C-P = Hz), 129.0, 129.0, 128.9, 128.3, 127.7, (d, J C-P = 9.4 Hz), (d, J C-P = 5.6 Hz), 122.1; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.7; HRMS (ESI-TF): Calcd for C 28 H 20 BrN 3 P [M+H] + : , Found: (diphenylphosphoryl)quinolin-8-yl 2-iodobenzoate (3pa): I N P 3pa Light yellow solid (45% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.90 (t, J= 3.9Hz, 1H), 8.52 (d, J= 2.1, 1H), (m, 1H), 8.12 (d, J= 7.8, 1H), (m, 4H), (m, 3H), (m, 6H), (m, 1H),7.19 (dd, J= 14.9, 4.2 Hz, 1H); 13 C NMR (100 MHz, CDCl 3 ) δ: 164.9, (d, J C-P = 11.3 Hz), (d, J C-P = 2.7 Hz), (d, J C-P = 9.3 Hz), (d, J C-P = 93.7 Hz), 133.5, 133.4, (d, J C-P = 2.6 Hz), 132.4, (d, J C-P = 9.9 Hz), (d, J C-P = Hz), (d, J C-P = 12.3 Hz), 128.9, 128.6, 128.2, 127.6, (d, J C-P = 9.4 Hz), (d, J C-P = 5.4 Hz), 122.2, 95.3; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.6; HRMS (ESI-TF): Calcd for C 28 H 20 IN 3 P [M+H] + : , Found: (diphenylphosphoryl)quinolin-8-yl 4-cyanobenzoate (3qa): NC N P 3qa Light yellow solid (58% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.84 (t, J= 4.0 Hz, 1H), (m, 1H), (m, 2H), (m, 2H), (m, 4H), (m, 3H), (m, 5H), 7.16 (dd, J= 14.9, 4.3 Hz, 1H); 13 C NMR (100 MHz, CDCl 3 ) δ: 163.9, (d, J C-P = 11.5 Hz), (d, J C-P = 2.8 Hz), (d, J C-P = 7.2 Hz), (d, J C-P = 93.5 Hz), 133.3, (d, J C-P = 2.7 Hz), 132.5, 132,0 (d, J C-P = 10.0 Hz), 131.0, (d, J C-P = Hz), 129.0, (d, J C-P = 12.5 Hz), 127.7, (d, J C-P = 9.4 Hz), (d, J C-P = 5.6 Hz), 122.0, (d, J C-P = 96.4 Hz) ; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.7; HRMS (ESI-TF): Calcd for C 29 H 20 N 2 3 P [M+H] + : , Found: diphenylphosphoryl)quinolin-8-yl 3-(trifluoromethyl)benzoate (3ra): S11
12 N P CF 3 3ra Light yellow solid (67% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.85 (t, J= 4.0 Hz, 1H), 8.60 (s, 1H), (m, 1H), (m, 1H), (m, 1H), (m, 5H), (m, 4H), (m, 4H), 7.16 (dd, J= 14.9, 4.3 Hz, 1H); 13 C NMR (100 MHz, CDCl 3 ) δ: 164.2, (d, J C-P = 11.5 Hz), (d, J C-P = 2.9 Hz), (d, J C-P = 7.0 Hz), (d, J C-P = 93.8 Hz), 133.7, (d, J C-P = 2.7 Hz), 132,0 (d, J C-P = 10.0 Hz), (q, J C-F = 32.9 Hz), (d, J C-P = Hz), 130.3, (d, J C-P = 3.6 Hz), 129.3, (d, J C-P = 12.3 Hz), 128.9, 127.7, (d, J C-P = 3.8 Hz), (d, J C-P = 9.5 Hz), (q, J C-F = 5.4 Hz), (q, J C-F = Hz), 122.1; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.6; 19 F NMR (376 MHz, CDCl 3 ) δ: ; HRMS (ESI-TF): Calcd for C 29 H 20 F 3 N 3 P [M+H] + : , Found: (diphenylphosphoryl)quinolin-8-yl 4-(trifluoromethyl)benzoate (3sa): F 3 C N P 3sa Light yellow solid (52% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.84 (t, J= 3.8 Hz, 1H), (m, 1H), 8.45 (d, J= 8.3 Hz, 2H), 7.82 (d, J= 8.3 Hz, 2H), (m, 4H), (m, 4H), (m, 4H), 7.16 (dd, J= 14.9, 4.2 Hz, 1H); 13 C NMR (100 MHz, CDCl 3 ) δ: 164.3, (d, J C-P = 11.4 Hz), (d, J C-P = 2.8 Hz), (d, J C-P = 7.1 Hz), (d, J C-P = 93.8 Hz), 135.3, 134.9, (d, J C-P = 2.7 Hz), 132,0 (d, J C-P = 10.0 Hz), (d, J C-P = Hz), 130.9, (d, J C-P = 12.4 Hz), 127.6, (d, J C-P = 9.3 Hz), (d, J C-F = 5.4 Hz), (d, J C-P = 3.7 Hz), 122.1; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.6; 19 F NMR (376 MHz, CDCl 3 ) δ: ; HRMS (ESI-TF): Calcd for C 29 H 20 F 3 N 3 P [M+H] + : , Found: (diphenylphosphoryl)-2-methylquinolin-8-yl benzoate (3ta): N P 3ta Light yellow solid (69% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: (m, 3H), (m, 4H), (m, 10H), (m, 1H), (d, J= 15.4 Hz, 1H), 2.55 (s, 3H); 13 C NMR (100 MHz, CDCl 3 ) δ: 165.7, (d, J C-P = 11.4 Hz), (d, J C-P = 3.0 Hz), (d, J C-P = 7.7 Hz), (d, J C-P = 94.0 Hz), 133.5, (d, J C-P = 2.6 Hz), 132,0 (d, J C-P = 9.9 Hz), S12
13 131.3 (d, J C-P = Hz), 130.5, 129.7, (d, J C-P = 12.4 Hz), 128.6, (d, J C-P = 9.0 Hz), (d, J C-P = 7.0 Hz), 126.5, (d, J C-P = 5.3 Hz), 122.0, 25.8; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.4; HRMS (ESI-TF): Calcd for C 29 H 23 N 3 P [M+H] + : , Found: (diphenylphosphoryl)-2-methylquinolin-8-yl 4-methylbenzoate (3ua): N P 3ua Light yellow solid (67% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.35 (d, J= 8.4 Hz, 1H), 8.21 (d, J= 8.1 Hz, 2H), (m, 4H), (m, 2H), (m, 5H), (m, 1H), 7.34 (d, J= 8.0 Hz, 2H), 7.10 (d, J= 15.3 Hz, 1H), 2.54 (s, 3H), 2.47 (s, 3H); 13 C NMR (100 MHz, CDCl 3 ) δ: 165.7, (d, J C-P = 11.3 Hz), (d, J C-P = 2.9 Hz), 144.3, (d, J C-P = 7.5 Hz), (d, J C-P = 93.9 Hz), (d, J C-P = 2.4 Hz), 132,0 (d, J C-P = 9.9 Hz), (d, J C- P = Hz), 130.5, 129.3, (d, J C-P = 12.3 Hz), (d, J C-P = 9.0 Hz), (d, J C-P = 6.7 Hz), 126.9, 126.5, (d, J C-P = 5.2 Hz), 122.1, 25.8, 21.8; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.3; HRMS (ESI-TF): Calcd for C 30 H 25 N 3 P [M+H] + : , Found: (diphenylphosphoryl)-2-methylquinolin-8-yl 2-methylbenzoate (3va): N P 3va Light yellow solid (64% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: (m, 2H), (m, 4H), (m, 2H), (m, 6H), (m, 1H), (m, 2H), 7.12 (d, J= 15.3 Hz, 1H), 2.72 (s, 3H), 2.59 (s, 3H); 13 C NMR (100 MHz, CDCl 3 ) δ: 166.6, (d, J C-P = 11.3 Hz), (d, J C-P = 2.8 Hz), (d, J C-P = 7.4 Hz), 140.9, (d, J C-P = 93.9 Hz), (d, J C-P = 2.4 Hz), 132.5, 132,0 (d, J C-P = 10.0 Hz), 131.7, 131.4, (d, J C-P = Hz), 129.2, (d, J C-P = 12.2 Hz), (d, J C-P = 9.1 Hz), (d, J C-P = 7.0 Hz), 126.5, 125.9, (d, J C-P = 5.2 Hz), 122.1, 25.7, 21.6; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.3; HRMS (ESI-TF): Calcd for C 30 H 25 N 3 P [M+H] + : , Found: (diphenylphosphoryl)quinolin-8-yl pivalate (3wa): 3wa N P Light yellow solid (34% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.85 (t, J= 4.0 Hz, S13
14 1H), 8.44 (d, J= 8.4 Hz, 1H), (m, 4H), (m, 2H), (m, 5H), (m, 1H), 7.13 (dd, J= 15.0, 4.2 Hz, 1H), 1.49 (s, 1H); 13 C NMR (100 MHz, CDCl 3 ) δ: 177.5, (d, J C-P = 11.6 Hz), (d, J C-P = 3.0 Hz), (d, J C-P = 9.2 Hz), (d, J C-P = 93.6 Hz), (d, J C-P = 2.8 Hz), (d, J C-P = 10.1 Hz), (d, J C-P = Hz), (d, J C-P = 12.4 Hz), 128.7, 127.6, (d, J C-P = 9.4 Hz), (d, J C-P = 5.6 Hz), 121.9, 39.3, 27.4; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.7; HRMS (ESI-TF): Calcd for C 26 H 25 N 3 P [M+H] + : , Found: (diphenylphosphoryl)quinolin-8-yl 2-phenylbutanoate (3xa): N P 3xa Light yellow solid (37% yield); mp o C; 1 H NMR (400 MHz, CDCl 3 ) δ: 8.81 (t, J= 3.9 Hz, 1H), 8.42 (d, J= 8.5 Hz, 1H), (m, 6H), (m, 6H), (m, 3H), (m, 2H), 7.13 (dd, J= 14.9, 4.2 Hz, 1H), 3.97 (t, J= 7.6 Hz, 1H), (m, 1H) (m, 1H), 1.08 (t, J= 7.4 Hz, 3H); 13 C NMR (100 MHz, CDCl 3 ) δ: 173.0, (d, J C-P = 11.5 Hz), (d, J C-P = 2.7 Hz), (d, J C-P = 7.2 Hz), 138.7, (d, J C-P = 94.0 Hz), (d, J C-P = 2.2 Hz), 132,0 (d, J C-P = 18.2 Hz), 132.0, (d, J C-P = 7.2 Hz), (d, J C-P = 7.6 Hz), 129.0, 128.9, 128.6, 128.4, 127.6, 127.4, (d, J C-P = 9.4 Hz), (d, J C-P = 5.4 Hz), 121.9, 53.2, 29.7, 27.0; 31 P NMR (163 MHz, CDCl 3 ) δ: 30.7; HRMS (ESI-TF): Calcd for C 31 H 27 N 3 P [M+H] + : , Found: References 1. Truong, T.; Klimovica, K.; Daugulis,. J. Am. Chem. Soc. 2013, 135, The Single Crystal X-ray Diffraction Study of 3aa. S14
15 CCDC (3aa) contains the supplementary crystallographic data for this paper. These data can be obtained free of charge from The Cambridge Crystallographic Data Centre via www. ccdc.cam.ac.uk/data_request/cif. Table S2 Crystal Data and Structure Refinement for 3aa Identification code Empirical formula C 28 H 22 N 4 P Formula weight Temperature/K 293(2) Crystal system monoclinic Space group P2 1 /c a/å (11) b/å (14) c/å (9) α/ 90 β/ (9) γ/ 90 Volume/Å (4) Z 4 ρ calc g/cm μ/mm F(000) Crystal size/mm S15
16 Radiation MoKα (λ = ) 2Θ range for data collection/ to Index ranges -15 h 14, -27 k 26, -6 l 11 Reflections collected Independent reflections 4823 [R int = , R sigma = ] Data/restraints/parameters 4823/0/307 Goodness-of-fit on F Final R indexes [I>=2σ (I)] R 1 = , wr 2 = Final R indexes [all data] R 1 = , wr 2 = Largest diff. peak/hole / e Å / The Experiment of Trapping the osphonyl Radical HP 2a + H BHT standard conditions 2 h H P 7a HRMS (ESI+) m/z:[m+na]+ Calcd for C 27 H 33 2 P ;found: Copies of 1 H, 13 C and 31 P NMR Spectra for the Products S16
17 S17
18 S18
19 S19
20 S20
21 S21
22 S22
23 S23
24 S24
25 S25
26 S26
27 S27
28 S28
29 S29
30 S30
31 S31
32 S32
33 S33
34 S34
35 S35
36 S36
37 S37
38 S38
39 S39
40 S40
41 S41
42 S42
43 S43
44 S44
45 S45
46 S46
47 S47
48 S48
49 S49
50 S50
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