ethyl [(1R)-9-[(1S)-1-(4-chlorophenyl)ethyl-6-fluoro-8-(methylsulfonyl)-2,3,4,9-tetrahydro-1H-carbazol-1-yl]]acetate 、
ethyl [(1S)-9-[(S)-1-(4-chlorophenyl)ethyl]-6-fluoro-8-(methylsulfonyl)-2,3,4,9-tetrahydro-1H-carbazol-1-yl]acetate 、
氢氧化锂 、 、
溶剂黄146 在
Brine 、
Sodium sulfate-III 、
ethyl [(1S)-9-[(S)-1-(4-chlorophenyl)ethyl]-6-fluoro-8-(methylsulfonyl)-2,3,4,9-tetrahydro-1H-carbazol-1-yl]acetate 、 [(1R)-9-[(1S)-(4-chlorophenyl)ethyl]-6-fluoro-8-(methylsulfonyl)-2,3,4,9-tetrahydro-1H-carbazol-1-yl]acetic acid 、
乙酸乙酯 、 hexanes 作用下,
以
tetrahydrofuran methanol 为溶剂,
反应 12.0h,
以to give the desired [(1R)-9-[(1S)-1-(4-chlorophenyl)ethyl]-6-fluoro-8-(methylsulfonyl)-2,3,4,9-tetrahydro-1H-carbazol-1-yl]acetic acid with de>90% which的产率得到[(1R)-9-[(1S)-1-(4-chlorophenyl)ethyl]-6-fluoro-8-(methylsulfonyl)-2,3,4,9-tetrahydro-1H-carbazol-1-yl] acetatic acid