Supporting Information for Iron-catalyzed decarboxylative alkenylation of cycloalkanes with arylvinylic carboxylic acids via a radical process
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1 Supporting Information for Iron-catalyzed decarboxylative alkenylation of cycloalkanes with arylvinylic carboxylic acids via a radical process Jincan Zhao 1, Hong Fang 1, Jianlin Han* 1,2 and Yi Pan* 1 Address: 1 School of Chemistry and Chemical Engineering, State of Key Laboratory of Coordination, Nanjing University, Nanjing, , China and 2 Institute for Chemistry & BioMedical Sciences, Nanjing University, Nanjing, , China Jianlin Han* - hanjl@nju.edu.cn; Yi Pan* - yipan@nju.edu.cn *Corresponding author Experimental details and spectral data Index 1. Experimental Section...S2 General Information...S2 General Procedure...S2 2. Characterization data for compounds 3a p and 4a f...s H and 13 C NMR spectra 3a p and 4a f...s9 4. References...S31 S1
2 1. Experimental Section General Information: All reactions were carried out under a nitrogen atmosphere. Column chromatography was carried out on silica gel ( mesh). Analytical thin layer chromatography (TLC) was performed on glass plates of Silica Gel GF-254 with detection by UV light. Standard techniques for synthesis under inert gas atmosphere by using gasbag and Schlenk glassware equipped with an 8 mm PTFE vacuum stop-cock (Synthware) were employed. All starting materials and reagents were commercially available. 1 H and 13 C NMR spectra were recorded on a Bruker AVANCE400M spectrometer. The chemical shift references were as follows: ( 1 H) CDCl 3, 7.26 ppm (CHCl 3 ); ( 13 C) CDCl 3, ppm (CDCl 3 ). HRMS spectra were carried out at Micromass GCT (TOF MS EI + ). Melting points were determined on a Melt-Temp apparatus (X-4) from Beijing Fukai Electro-optic Instrument Plant and are uncorrected. General Procedure: To a Schlenk tube equipped with a magnetic stir bar were added Fe(acac) 3 (21.2 mg, 0.06 mmol) and cinnamic acid (0.3 mmol) under a nitrogen atmosphere. Cycloalkane (2.0 ml, mmol) and DTBP (di-tert-butyl peroxide, 0.6 mmol, 113 μl) were added under nitrogen and the resulting reaction mixture was kept stirring at 120 C for 24 h. After cooling to room temperature and removal of volatiles the products were isolated by flash column chromatography (PE). Products 3a, 3e, 3h, 3j, 3k, 3p, 4a, 4c, 4e, 4f, 3b, 3l, 3d, 3n and 4b, are known compounds. 1 H and 13 C NMR spectra of these compounds have been confirmed to be identical to those of known samples (3a, 3e, 3h, 3j, 3k, 3p, 4a, 4c, 4e and 4f) [1], (3b and 3l) [2], 3d [3], 3n [4], 4b [5]). S2
3 2. Characterization data for 3a p and 4a f. (E)-(2-Cyclohexylvinyl)benzene(3a, known compound): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ (m, 4H), (m, 1H), 6.32 (d, J = 16.1 Hz, 1H), 6.15 (dd, J = 16.0, 6.9 Hz, 1H), (m, 1H), (m, 5H), (m, 5H). 13 C NMR (100 MHz, CDCl 3 ) δ , , , , , , 41.12, 32.93, 26.16, (E)-1-(2-Cyclohexylvinyl)-4-methylbenzene(3b, known compound): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ 7.22 (d, J = 8.1 Hz, 2H), 7.06 (d, J = 8.0 Hz, 2H), 6.29 (d, J = 16.0 Hz, 1H), 6.10 (dd, J = 16.0, 6.9 Hz, 1H), 2.29 (s, 3H), (m, 1H), (m, 5H), (m, 5H). 13 C NMR (100 MHz, CDCl 3 ) δ , , , , , , 41.11, 33.01, 26.19, 26.06, (E)-1-(2-Cyclohexylvinyl)-3-methylbenzene(3c): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ (m, 3H), (m, 1H), 6.29 (d, J = 16.0 Hz, 1H), 6.13 (dd, J = 16.0, 6.9 Hz, 1H), 2.29 (s, 3H), (m, 1H), (m, 5H), (m, 5H). 13 C NMR (100 MHz, CDCl 3 ) δ , , , , , , , , 41.14, 32.97, 26.17, 26.04, HRMS (TOF MS EI + ) m/z calcd for [C 15 H 20 ] , found (E)-1-(2-Cyclohexylvinyl)-2-methylbenzene(3d, known compound): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ 7.63 (d, J = 7.0 Hz, 1H), (m, 3H), 6.77 (d, J = 15.8 Hz, 1H), 6.26 (dd, J = 15.8, 7.0 Hz, 1H), 2.54 (s, 3H), (m, 1H), (m, 5H), (m, 5H). 13 C NMR (100 MHz, CDCl 3 ) δ , , , , , , , , S3
4 41.43, 33.08, 26.18, 26.05, (E)-1-(2-Cyclohexylvinyl)-4-methoxybenzene(3e, known compound): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ 7.17 (d, J = 8.7 Hz, 1H), 6.72 (d, J = 8.7 Hz, 1H), 6.19 (d, J = 16.0 Hz, 1H), 5.94 (dd, J = 16.0, 6.9 Hz, 1H), 3.67 (s, 3H), (m, 1H), (m, 5H), (m, 5H). 13 C NMR (100 MHz, CDCl 3 ) δ , , , , , , 55.15, 41.07, 33.06, 26.17, (E)-1-(2-Cyclohexylvinyl)-3-methoxybenzene(3f): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ 7.18 (t, J = 7.9 Hz, 1H), (m, 2H), 6.72 (dd, J = 8.1, 2.1 Hz, 1H), 6.30 (d, J = 16.0 Hz, 1H), 6.16 (dd, J = 16.0, 6.8 Hz, 1H), 3.78 (s, 3H), (m, 1H), (m, 5H), (m, 5H). 13 C NMR (100 MHz, CDCl 3 ) δ , , , , , , , , 55.07, 41.08, 32.89, 26.14, HRMS (TOF MS EI + ) m/z calcd for [C 15 H 20 O] , found (E)-1-(2-Cyclohexylvinyl)-2-methoxybenzene(3g): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ 7.41 (dd, J = 7.6, 1.1 Hz, 1H), 7.14 (ddd, J = 8.8, 7.7, 1.1 Hz, 1H), 6.87 (t, J = 7.4 Hz, 1H), 6.80 (d, J = 8.2 Hz, 1H), 6.69 (d, J = 16.1 Hz, 1H), 6.14 (dd, J = 16.1, 7.0 Hz, 1H), 3.78 (s, 3H), (m, 1H), (m, 5H), (m, 5H). 13 C NMR (100 MHz, CDCl 3 ) δ , , , , , , , , 55.31, 41.53, 33.04, 26.17, HRMS (TOF MS EI + ) m/z calcd for [C 15 H 20 O] , found (E)-1-(2-Cyclohexylvinyl)-4-fluorobenzene(3h, known compound): White solid, mp C, 1 H NMR (400 MHz, CDCl 3 ) δ 7.50 (d, J = 8.2 Hz, 2H), 7.38 (d, J = 8.2 Hz, 2H), 6.34 (d, J = 16.1 Hz, 1H), 6.25 (dd, J = 16.0, 6.6 Hz, 1H), (m, 1H), (m, 5H), (m, 5H). 13 C NMR (100 MHz, CDCl 3 ) δ (d, J = 1.2 Hz), , (d, J = 32.3 Hz), , , (q, J = 3.9 Hz), 41.23, 32.76, 26.12, S4
5 (E)-1-(2-Cyclohexylvinyl)-3-fluorobenzene(3i): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ 7.20 (td, J = 7.9, 6.1 Hz, 1H), 7.04 (ddd, J = 10.4, 8.1, 4.8 Hz, 2H), (m, 1H), 6.29 (d, J = 16.0 Hz, 1H), 6.16 (dd, J = 15.9, 6.8 Hz, 1H), (m, 1H), (m, 5H), (m, 5H). 13 C NMR (100 MHz, CDCl 3 ) δ (d, J = Hz), (d, J = 7.7 Hz), , (d, J = 8.5 Hz), (d, J = 2.5 Hz), (d, J = 2.6 Hz), (d, J = 21.4 Hz), (d, J = 21.7 Hz), 41.08, 32.81, 26.12, HRMS (TOF MS EI + ) m/z calcd for [C 14 H 17 F] , found (E)-1-(2-Cyclohexylvinyl)-2-fluorobenzene(3j, known compound): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ (m, 1H), (m, 3H), 6.50 (d, J = 16.2 Hz, 1H), 6.22 (dd, J = 16.1, 7.0 Hz, 1H), (m, 1H), (m, 5H), (m, 5H). 13 C NMR (100 MHz, CDCl 3 ) δ (d, J = Hz), (d, J = 4.1 Hz), (d, J = 8.3 Hz), (d, J = 4.0 Hz), (d, J = 12.3 Hz), (d, J = 3.5 Hz), (d, J = 3.9 Hz), (d, J = 22.3 Hz), 41.52, 32.84, 26.14, (E)-1-Chloro-4-(2-cyclohexylvinyl)benzene(3k, known compound): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ (m, 4H), 6.27 (d, J = 16.0, 1H), 6.13 (dd, J = 16.0, 6.8 Hz, 1H), (m, 1H), (m, 5H), (m, 5H). 13 C NMR (100 MHz, CDCl 3 ) δ , , , , , , 41.10, 32.84, 26.12, (E)-1-Chloro-2-(2-cyclohexylvinyl)benzene(3l, known compound): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ 7.47 (dd, J = 7.7, 1.4 Hz, 1H), 7.29 (dd, J = 7.9, 1.1 Hz, 1H), (m, 2H), 6.72 (d, J = 15.9 Hz, 1H), 6.13 (dd, J = 15.9, 7.0 Hz, 1H), (m, 1H), (m, 5H), (m, 5H). 13 C NMR (100 MHz, CDCl 3 ) δ , , , , , , , , 41.31, 32.83, 26.13, S5
6 (E)-1,3-Dichloro-2-(2-cyclohexylvinyl)benzene(3m): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ 7.25 (d, J = 8.0 Hz, 2H), 7.00 (t, J = 8.0 Hz, 1H), 6.28 (d, J = 16.4 Hz, 1H), 6.14 (dd, J = 16.3, 6.7 Hz, 1H), (m, 1H), (m, 5H), (m, 5H). 13 C NMR (100 MHz, CDCl 3 ) δ , , , , , , 41.52, 32.51, 26.17, HRMS (TOF MS EI + ) m/z calcd for [C 14 H 16 Cl 2 ] , found Br (E)-1-Bromo-4-(2-cyclohexylvinyl)benzene (3n, known compound): White solid, mp C, 1 H NMR (400 MHz, CDCl 3 ) δ 7.36 (d, J = 8.5 Hz, 2H), 7.16 (d, J = 8.4 Hz, 2H), 6.25 (d, J = 16.1 Hz, 1H), 6.13 (dd, J = 16.0, 6.7 Hz, 1H), (m, 1H), (m, 5H), (m, 5H). 13 C NMR (100 MHz, CDCl 3 ) δ , , , , , , 41.08, 32.79, 26.11, (E)-1-(2-Cyclohexylvinyl)-3-(trifluoromethyl)benzene(3o): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ 7.57 (s, 1H), (m, 3H), 6.34 (d, J = 16.1 Hz, 1H), 6.22 (dd, J = 16.0, 6.7 Hz, 1H), (m, 1H), (m, 5H), (m, 5H). 13 C NMR (100 MHz, CDCl 3 ) δ (d, J = 13.6 Hz), (q, J = 32.0 Hz), (d, J = 1.1 Hz), , , , (q, J = 3.8 Hz), , (q, J = 3.8 Hz), 41.19, 32.81, 26.13, HRMS (TOF MS EI + ) m/z calcd for [C 15 H 17 F 3 ] , found (E)-2-(2-Cyclohexylvinyl)thiophene(3p, known compound): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ 7.04 (d, J = 5.1 Hz, 1H), 6.90 (dd, J = 5.1, 3.5 Hz, 1H), 6.84 (d, J = 3.6 Hz, 1H), 6.45 (d, J = 15.8 Hz, 1H), 6.01 (dd, J = 15.8, 6.9 Hz, 1H), (m, 1H), (m, 5H), (m, 5H). 13 C NMR (100 MHz, CDCl 3 ) δ , , , , , , 40.89, 32.77, 26.11, S6
7 (E)-(2-Cyclopentylvinyl)benzene(4a, known compound): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ (m, 2H), 7.25 (dd, J = 10.4, 4.9 Hz, 2H), 7.14 (ddd, J = 8.5, 2.5, 1.2 Hz, 1H), 6.35 (d, J = 15.9 Hz, 1H), 6.18 (dd, J = 15.8, 7.7 Hz, 1H), (m, 1H), (m, 2H), (m, 4H), (m, 2H). 13 C NMR (100 MHz, CDCl 3 ) δ , , , , , , 43.78, 33.18, (E)-1-(2-Cyclopentylvinyl)-4-methylbenzene(4b, known compound): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ 7.48 (d, J = 6.5 Hz, 2H), 7.32 (d, J = 7.5 Hz, 2H), 6.59 (d, J = 15.8 Hz, 1H), 6.39 (ddd, J = 15.8, 7.7, 1.7 Hz, 1H), (m, 1H), 2.55 (s, 3H), (m, 8H). 13 C NMR (100 MHz, CDCl 3 ) δ , , , , , , 43.78, 33.20, 25.19, (E)-1-(2-Cyclopentylvinyl)-4-fluorobenzene(4c): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ (m, 2H), (m, 2H), 6.31 (d, J = 15.8 Hz, 1H), 6.09 (dd, J = 15.8, 7.8 Hz, 1H), (m, 1H), (m, 48H). 13 C NMR (100 MHz, CDCl 3 ) δ (d, J = Hz), (d, J = 2.2 Hz), (d, J = 3.2 Hz), (d, J = 7.8 Hz), , (d, J = 21.4 Hz), 43.75, 33.19, HRMS (TOF MS EI + ) m/z calcd for [C 13 H 15 F] , found (E)-1-Chloro-2-(2-cyclopentylvinyl)benzene(4d): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ 7.31 (s, 1H), (m, 3H), 6.27 (d, J = 15.8 Hz, 1H), 6.18 (dd, J = 15.8, 7.4 Hz, 1H), (m, 1H), (m, 8H). 13 C NMR (100 MHz, CDCl 3 ) δ , , , , , , , , 43.71, 33.09, HRMS (TOF MS EI + ) m/z calcd for [C 13 H 15 Cl] , found S7
8 (E)-Styrylcycloheptane(4e, known compound): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ 7.31 (dd, J = 8.3, 1.1 Hz, 2H), 7.25 (dd, J = 10.4, 4.9 Hz, 2H), (m, 1H), 6.30 (d, J = 16.0 Hz, 1H), 6.19 (dd, J = 15.9, 7.4 Hz, 1H), (m, 1H), (m, 2H), (m, 10H). 13 C NMR (100 MHz, CDCl 3 ) δ , , , , , , 43.20, 34.71, 28.38, (E)-Styrylcyclooctane(4f, known compound): Colorless oil, 1 H NMR (400 MHz, CDCl 3 ) δ (m, 2H), 7.24 (dd, J = 10.4, 4.9 Hz, 2H), 7.13 (dd, J = 10.2, 4.3 Hz, 1H), 6.30 (d, J = 16.0 Hz, 1H), 6.18 (dd, J = 15.9, 7.4 Hz, 1H), (m, 1H), (m, 14H). 13 C NMR (100 MHz, CDCl 3 ) δ , , , , , , 41.29, 31.83, 27.43, 25.98, S8
9 3. 1 H and 13 C NMR spectra 1 H- and 13 C NMR of 3a S9
10 1 H- and 13 C NMR of 3b S10
11 1 H- and 13 C NMR of 3c S11
12 1 H- and 13 C NMR of 3d S12
13 1 H- and 13 C NMR of 3e S13
14 1 H- and 13 C NMR of 3f S14
15 1 H- and 13 C NMR of 3g S15
16 1 H- and 13 C NMR of 3h S16
17 1 H- and 13 C NMR of 3i S17
18 1 H- and 13 C NMR of 3j S18
19 1 H- and 13 C NMR of 3k S19
20 1 H- and 13 C NMR of 3l S20
21 1 H- and 13 C NMR of 3m S21
22 1 H- and 13 C NMR of 3n S22
23 1 H- and 13 C NMR of 3o S23
24 1 H- and 13 C NMR of 3p S24
25 1 H- and 13 C NMR of 4a S25
26 1 H- and 13 C NMR of 4b S26
27 1 H- and 13 C NMR of 4c S27
28 1 H- and 13 C NMR of 4d S28
29 1 H- and 13 C NMR of 4e S29
30 1 H- and 13 C NMR of 4f S30
31 4. References 1. Jang, Y.-J.; Shih, Y.-K.; Liu, J.-Y.; Kuo, W.-Y.; Yao, C.-F. Chem. Eur. J. 2003, 9, Ikeda, Y.; Nakamura, T.; Yorimitsu, H.; Oshima, K., J. Am. Chem. Soc. 2002, 124, Yao, Q.; Kinney, E. P.; Yang, Z., J. Org. Chem. 2003, 68, Loeffler, L. J. and Delorefice, S. B., J. Pharm. Sci. 1975, 64, Ishikawa, T.; Nonaka, S.; Hirao, T., Chem. Commun. 1998, S31
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