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- Ἀρτεμίσιος Αγγελίδου
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1 Electronic Supplementary Information Unprecedented Carbon-Carbon Bond Cleavage in Nucleophilic Aziridine Ring Opening Reaction, Efficient Ring Transformation of Aziridines to Imidazolidin-4-ones Jin-Yuan Wang, Yuan Hu, De-Xian Wang, Jie Pan, Zhi-Tang Huang, and Mei-Xiang Wang* Beijing National Laboratory for Molecular Sciences, Laboratory of Chemical Biology, Institute of Chemistry, Chinese Academy of Sciences, Beijing , China Table of Contents 1. General experimental methods and spectroscopic data of compounds prepared...esi1 2. References. ESI5 1. General experimental methods and spectroscopic data of compounds prepared. Both melting points and boiling points are uncorrected. Starting materials 1, 1-3 2, 4 5, 4 and were prepared according to the literature methods. 1.1 General procedure for the cross-coupling reaction of trans- and cis-3-aryl-1-methylaziridine-2-carboxamides 1 and 7 with 1-aryl-2-bromoethenes 2 and 5. Under argon protection, a mixture of trans- or cis-3-aryl-1-methylaziridine-2-carboxamides 1 or 7 (1 mmol), N,N-dimethylglycine (112 mg, 0.8 mmol), Cs 2 CO 3 (652 mg, 2 mmol), CuI (76 mg, 0.4 mmol) and 1-aryl-2-bromoethenes 2 or 5 (3 mmol) in dry 1,4-dioxane (40 ml) was refluxed for a period of time (Table 1 and Scheme2 3-5). After completion of the reaction, which was
2 monitored by TLC, the mixture was filtrated through a pad silica gel ( mesh). The filtrate was concentrated under vacuum, the resulting residue was chromatographed on a silica gel column using a mixture of petroleum ether and ethyl acetate (1:5) to give pure products 3, 4, 6, 8 and 9 (Table 1 and Schemes 3-5). 1.2 Conversion of N-styryl-3-phenyl-1-methylaziridine-2-carboxamides 3 and 9 into the corresponding imidazolidin-4-one products 4a and 6a. Under argon protection, a mixture of N-styryl-3-phenyl-1-methylaziridine-2-carboxamide 3 (0.5 mmol) and Cs 2 CO 3 (2 mmol) in dry 1,4-dioxane (10 ml) was refluxed 12 h, while in the case of 9, a mixture of 9 (0.5 mmol) and NaH (2 mmol) in dry DMF was stirred at 70 o C. After completion of the reaction, which was monitored by TLC, water was added and resulting mixture was extracted with ethyl acetate (20 ml 3). The organic layer was dried over with anhydrous Na 2 SO 4, concentrated under vacuum to give a residue. Column chromatography on a silica gel column using a mixture of petroleum ether and ethyl acetate (1:5) to give pure products 4a or 6a. 1.3 Characterization of the products prepared. N-(Z-Phenylvinyl)-trans-1-methyl-3-phenylaziridine-2-carboxamide 3: oil; 1 H NMR (300 MHz, CDCl 3 TMS) δ 9.07 (d, 1H, J = 10.8 Hz), (m, 11H), 5.75 (d, 1H, J = 9.6 Hz), 3.29 (s, 1H), 2.69 (s, 1H), 2.15 (s, 3H); IR (KBr) ν 3335 (N-H), 1687 (C=O), 1654 cm -1 ; 13 C NMR (75 MHz, CDCl 3 TMS) δ 168.1, 135.8, 131.5, 130.0, 129.0, 127.9, 126.8, 121.0, 110.5, 48.0, 44.0, 37.9; MS (EI) m/z (%) 278 (15) [M] +, 233 (22), 208 (19), 160 (28), 132 (100). HRMS Calcd for C 18 H 18 N 2 O (M+1) , Found Methyl-2-phenyl-3-(Z-phenylvinyl)imidazolidin-4-one 4a: oil; 1 H NMR (300 MHz, CDCl 3 TMS) δ (m, 10H), 6.29 (d, 2H, J = 9.5 Hz), 5.96 (d, 1H, J = 9.5 Hz), 4.89 (s, 1H), 3.70 (d, 1H, J = 15.0 Hz), 3.28 (d, 1H, J = 14.9 Hz) 2.24 (s, 3H); IR (KBr) ν 1719 (C=O), 1650 cm -1 ; 13 C NMR (75 MHz, CDCl 3 TMS) δ 170.1, 139.3, 136.1, 133.8, 129.6, 128.5, 127.4, 126.7, 125.6, 121.3, 114.6, 82.8, 56.6, 39.1; MS (EI) m/z (%) 278 (20) [M] +, 184 (15), 184 (15), 132 (100). HRMS Calcd for C 18 H 18 N 2 O (M+1) ,
3 Found (Z-4-Chlorophenylvinyl)-1-methyl-2-phenylimidazolidin-4-one 4b: mp C; 1 H NMR (300 MHz, CDCl 3 TMS) δ (m, 5H), 6.88 (d, 2H, J = 9.6 Hz), 6.80 (d, 2H, J = 9.0 Hz), 6.17 (d, 1H, J = 9.5 Hz), 5.82 (d, 1H, J = 9.7 Hz), 4.78 (s, 1H), 3.61 (d, 1H, J = 14.9 Hz), 3.20 (d, 1H, J = 14.9 Hz), 2.18 (s, 3H); IR (KBr) ν 1720 (C=O), 1650 cm -1 ; 13 C NMR (75 MHz, CDCl 3 TMS) δ 171.0, 136.1, 134.3, 133.1, 130.2, 129.1, 128.3, 128.2, 127.8, 121.7, 119.7, 83.6, 56.5, 38.9; MS (EI) m/z (%) 312 (15) [M] +, 314 (5) [M+2] +, 132 (100). HRMS Calcd for C 18 H 17 ClN 2 O (M +1) , Found Methyl-2-phenyl-3-(Z)-(4-tolylvinyl)imidazolidin-4-one 4c: oil; 1 H NMR (300 MHz, CDCl 3 TMS) δ (m, 9H), 6.11 (d, 1H, J = 9.4 Hz), 5.89 (d, 1H, J = 9.4 Hz), 4.85 (s, 1H), 3.62 (d, 1H, J = 14.9 Hz), 3.22 (d, 1H, J = 14.8 Hz), 2.30 (s, 3H), 2.19 (s, 3H); IR (KBr) ν 1718 (C=O), 1650 cm -1 ; 13 C NMR (75 MHz, CDCl 3 TMS) δ 170.2, 139.3, 136.2, 133.8, 129.6, 128.5, 127.5, 126.7, 125.6, 121.3, 114.6, 82.8, 56.6, 39.1, 21.3; MS (EI) m/z (%) 292 (28) [M] +, 194 (3), 132 (100). HRMS Calcd for C 19 H 20 N 2 O (M+1) , Found (4-Fluorophenyl)-1-methyl-3-(Z-phenylvinyl)imidazolidin-4-one 4d: mp C; 1 H NMR (300 MHz, CDCl 3 TMS) δ (m, 9H), 6.30 (d, 1H, J = 9.4 Hz), 5.97 (d, 1H, J = 9.4 Hz), 4.86 (s, 1H), 3.68 (d, 1H, J = 14.9 Hz), 3.32 (d, 1H, J = 14.9 Hz), 2.23 (s, 3H); IR (KBr) ν 1720 (C=O), 1650 cm -1 ; 13 C NMR (75 MHz, CDCl 3 TMS) δ 171.0, 165.0, 162.5, 135.8, 132.3, 129.7, 129.6, 129.0, 128.0, 127.4, 121.2, 120.8, 115.1, 114.8, 82.7, 56.4, 39.0; MS (EI) m/z (%) 296 (19) [M] +, 224 (3), 151 (20), 150 (100). HRMS Calcd for C 18 H 17 FN 2 O (M+1) , Found Anal. Calcd for C 18 H 17 FN 2 O: C, 72.95; H, 5.78; N, Found: C, 77.99; H, 5.79; N, (4-Chlorophenyl)-1-methyl-3-(Z-phenylvinyl)imidazolidin-4-one 4e: mp C; 1 H NMR (300 MHz, CDCl 3 TMS) δ (m, 3H), 7.13 (d, 2H, J = 8.3 Hz), (m, 2H), 6.70 (d, 2H, J = 8.4 Hz), 6.31 (d, 1H, J = 9.5 Hz), 5.97 (d, 1H, J = 9.5 Hz), 4.86 (s, 1H), 3.67 (d, 1H, J = 14.9 Hz), 3.26 (d, 1H, J = 14.9 Hz), 2.23 (s, 3H); IR (KBr) ν 1720 (C=O), 1649 cm -1 ; 13 C NMR (75 MHz, CDCl 3 TMS) δ171.1, 135.7, 135.1, 134.8, 129.2, 129.0, 128.3, 128.0, 127.5, 121.1, 120.8, 82.7, 56.4, 39.0; MS (EI) m/z (%):
4 312 (18) [M] +, 314 (6) [M+2] +, 166 (100). HRMS Calcd for C 18 H 17 ClN 2 O (M+1) , Found Methyl-2-phenyl-3-(E-phenylvinyl)imidazolidin-4-one 6a: oil; 1 H NMR (300 MHz, CDCl 3 TMS) δ (m, 11H), 5.71 (d, 1H, J = 15.1 Hz), 5.13 (s, 1H), 3.75 (d, 1H J = 15.2 Hz), 3.32 (d, 1H, J = 15.2 Hz), 2.38 (s, 3H); IR (KBr) ν 1718 (C=O), 1649 cm -1 ; 13 C NMR (75 MHz, CDCl 3 TMS) δ 170.2, 136.8, 136.1, 129.4, 128.9, 128.5, 127.5, 126.8, 125.6, 121.2, 114.7, 83.0, 56.5, 39.2; MS (EI) m/z (%) 278 (20) [M] +, 132 (100). HRMS Calcd. for C 18 H 18 N 2 O (M+1) , Found (E-3-Chlorophenylvinyl)-1-methyl-2-phenylimidazolidin-4-one 6b: oil; 1 H NMR (300 MHz, CDCl 3 TMS) δ (m, 10H), 5.71 (d, 1H, J = 15.2 Hz), 5.07 (s, 1H), 3.72 (d, 1H J = 15.3 Hz), 3.29 (d, 1H, J = 15.2 Hz), 2.35 (s, 3H); IR (KBr) ν 1720 (C=O), 1650 cm -1 ; 13 C NMR (75 MHz, CDCl 3 TMS) δ 170.0, 135.8, 135.0, 130.2, 129.7, 129.0, 128.6, 127.7, 127.0, 125.7, 121.1, 114.7, 82.2, 56.4, 39.2; MS (EI) m/z (%) 312 (18) [M] +, 314 (6) [M+2] +, 166 (100). HRMS Calcd for C 18 H 17 ClN 2 O (M+1) , Found Methyl-3-(E-phenylvinyl)-2-tolylimidazolidin-4-one 6c: oil; 1 H NMR (300 MHz, CDCl 3 TMS) δ (m, 10H), 5.75 (d, 1H, J = 15.1 Hz), 5.08 (s, 1H), 3.72 (d, 1H, J = 15.1 Hz), 3.29 (d, 1H, J = 15.1 Hz), 2.35 (s, 3H), 2.34 (s, 3H); IR (KBr) ν 1719 (C=O), 1649 cm -1 ; 13 C NMR (75 MHz, CDCl 3 TMS) δ 170.2, 139.3, 136.2, 133.8, 129.6, 128.5, 127.5, 126.7, 125.6, 121.3, 114.6, 82.8, 56.6, 39.1, 21.3; MS (EI) m/z (%) 292 (24) [M] +, 171 (18), 146 (100). HRMS Calcd for C 19 H 20 N 2 O (M+1) , Found N-(Z-Phenylvinyl)-cis-1-methyl-3-phenylaziridine-2-carboxamide 8: mp C; 1 H NMR (300 MHz, CDCl 3 TMS) δ 8.43 (d, 1H, J = 11.0 Hz), (m, 11H), 5.57 (d, 1H, J = 9.6 Hz), 3.00 (d, 1H, J = 7.0 Hz), 2.61 (s, 3H), 2.47 (d, 1H, J = 7.0 Hz); IR (KBr) ν 3364 (N-H), 1689 (C=O), 1654 cm -1 ; 13 C NMR (75 MHz, CDCl 3 TMS) δ 166.1, 135.6, 134.8, 128.8, 128.3, 127.8, 127.7, 126.7, 120.5, 110.2, 49.2, 47.3, 46.4; MS (EI) m/z (%) 278 (27) [M] +, 160 (80), 132 (100). HRMS Calcd for C 18 H 18 N 2 O (M +1) , Found Anal. Calcd for C 18 H 18 N 2 O: C, 77.67; H, 6.52; N, Found: C,
5 77.32; H, 6.51; N, N-(E-Phenylvinyl)-cis-1-methyl-3-phenylaziridine-2-carboxamide 9: mp C; 1 H NMR (300 MHz, CDCl 3 TMS) δ 7.96 (d, 1H J = 11.1 Hz), (m, 11H), 5.90 (d, 1H, J = 14.6 Hz), 3.00 (d, 1H, J = 7.0 Hz), 2.64 (s, 3H), 2.48 (d, 1H, J = 7.1 Hz); IR (KBr) ν 3312 (N-H), 1671 (C=O), 1649 cm -1 ; 13 C NMR (75 MHz, CDCl 3 TMS) δ 165.6, 135.5, 133.8, 131.4, 129.3, 128.8, 127.8, 126.9, 121.7, 120.5, 110.6, 48.4, 47.4, 46.2; MS (EI) m/z (%) 278 (28) [M] +, 233 (26) 208 (11), 178 (50), 160 (40), 132 (100). Anal. Calcd for C 18 H 18 N 2 O: C, 77.67; H, 6.52; N, Found: C, 77.28; H, 6.51; N, References. (1) Wang, J.-Y.; Wang, D.-X.; Pan, J.; Huang, Z.-T. Wang, M.-X. J. Org. Chem. 2007, 72, (2) Wenkert, D.; Ferguson, S. B.; Porter, B.; Qvarnstrom, A.; McPhail, A. T. J. Org. Chem. 1985, 21, (3) Ayi, A. I.; Guedj, R. J. Chem. Soc., Perkin Trans. 1, 1983, (4) Yang, L.; Deng, G.; Wang, D.-X.; Huang, Z.-T.; Zhu, J.-P.; Wang, M.-X. Org. Lett. 2007, 9, (5) Yang, L.; Zheng, Q.-Y.; Wang, D.-X.; Huang, Z.-T.; Wang, M.-X. Org. Lett. 2008, 10, 2461 and references cited therein.
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