6-(4-chloro-2-fluoro-3-methoxyphenyl)-4-[(E,Z)-methanesulfonyloximino]-1,4,5,6-tetrahydropyridine-2-carboxylic acid methyl ester 在
N-溴代丁二酰亚胺(NBS) 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以84%的产率得到3-bromo-6-(4-chloro-2-fluoro-3-methoxyphenyl)-4-[(E)-methanesulfonyloximino]-1,4,5,6-tetrahydropyridine-2-carboxylic acid methyl ester