[(1R,4R)-1,7,7-Trimethyl-bicyclo[2.2.1]hept-(2Z)-ylideneamino]-acetic acid (1S,2R,5S)-2-isopropyl-5-methyl-cyclohexyl ester 、
3-溴丙炔 在
lithium diisopropyl amide 作用下,
生成
(1S,2R,5S)-2-isopropyl-5-methylcyclohexyl 2-(((1R,4R,Z)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-ylidene)amino)pent-4-ynoate 、 (1S,2R,5S)-2-isopropyl-5-methylcyclohexyl 2-(((1R,4R,Z)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-ylidene)amino)pent-4-ynoate