2-硝基乙烯基噻吩 、
t-butyl 2-methyl-4-oxocyclohex-2-ene-1-carboxylate 在
S-Α,Α-双(3,5-二甲基苯基)脯氨醇 、
硫脲 作用下,
以
甲苯 为溶剂,
反应 72.0h,
生成 (1S)-2-methyl-3-[(1R)-2-nitro-1-thiophen-2-yl-ethyl]-4-oxo-cyclohex-2-enecarboxylic acid tert-butyl ester 、 (rac)-(1S*)-2-methyl-3-[(1S*)-2-nitro-1-thiophen-2-yl-ethyl]-4-oxo-cyclohex-2-enecarboxylic acid tert-butyl ester 、
(1S)-2-methyl-3-[(1S)-2-nitro-1-thiophen-2-yl-ethyl]-4-oxo-cyclohex-2-enecarboxylic acid tert-butyl ester 、 (1R)-2-methyl-3-[(1S)-2-nitro-1-thiophen-2-yl-ethyl]-4-oxo-cyclohex-2-enecarboxylic acid tert-butyl ester