3-溴丙烯 、
[(1S,4R)-1-Cyclohexylsulfamoylmethyl-7,7-dimethyl-bicyclo[2.2.1]hept-(2E)-ylideneamino]-acetic acid tert-butyl ester 在
六甲基磷酰三胺 、
lithium diisopropyl amide 作用下,
生成 (R)-2-[(1S,4R)-1-Cyclohexylsulfamoylmethyl-7,7-dimethyl-bicyclo[2.2.1]hept-(2E)-ylideneamino]-pent-4-enoic acid tert-butyl ester 、 (S)-2-[(1S,4R)-1-Cyclohexylsulfamoylmethyl-7,7-dimethyl-bicyclo[2.2.1]hept-(2E)-ylideneamino]-pent-4-enoic acid tert-butyl ester