反应详情

温度

120 °C

Under air, the RS/SR mixture of enantiomers of 3-(hydroxyphenylmethyl)pyrrolidine-1-carboxylic acid t-butyl ester (156 mg, 0.56 mmol), 2-iodotoluene (144 μl, 1.1 mmol), CuI (22 mg, 112 μmol), 1,10-phenanthroline (41 mg, 224 μmol) and Cs2CO3 (365 mg, 1.1 mmol) in dry toluene (0.5 mL) were combined in a scaled tube and heated at 120° C. for 48 hours. The mixture was cooled to room temperature and diluted with DCM, passed through a pad of Celite. The filtrate was purified by flash chromatography on silica gel (hexane/EtOAc:10/1) to yield title compound 3a (149 mg) as a yellow oil. 1H-NMR (300 MHz, DMSO-d6): δ (ppm)=7.41-7.32 (m, 4H), 7.31-7.24 (m, 1H), 7.10 (m, 1H), 6.95 (m, 1H), 6.71 (m, 2H), 5.29 (d, J=7.2, 1H), 3.44-3.35 (m, 1H), 3.26-3.18 (m, 1H), 3.16-3.04 (m, 2H), 2.73-2.68 (m, 1H), 2.24 (s, 3H), 2.10-1.96 (m, 1H), 1.94-1.81 (m, 1H), 1.37 (m, 9H).

1. customwere combined in a scaled tube
2. temperatureThe mixture was cooled to room temperature
3. customThe filtrate was purified by flash chromatography on silica gel (hexane/EtOAc:10/1)