氯乙酸甲酯 、 N-methylmorpholinium (+/-)-(4R,5R)-4-(2-chlorophenyl)-3,5-dicyano-6-oxo-1,4,5,6-tetrahydropyridine-2-thiolate 以
乙醇 为溶剂,
生成
[(4S,5R)-4-(2-Chloro-phenyl)-3,5-dicyano-6-oxo-1,4,5,6-tetrahydro-pyridin-2-ylsulfanyl]-acetic acid methyl ester 、
[(4S,5S)-4-(2-Chloro-phenyl)-3,5-dicyano-6-oxo-1,4,5,6-tetrahydro-pyridin-2-ylsulfanyl]-acetic acid methyl ester