ethyl 3,3-bis(N-(3-(4-chlorophenyl)prop-2-ynyl)-4-methylphenylsulfonamido)acrylate 在
N-溴代丁二酰亚胺(NBS) 、
silver trifluoroacetate 作用下,
以
二氯甲烷 为溶剂,
反应 12.0h,
以62%的产率得到ethyl 5-bromo-4-(4-chlorophenyl)-2-{N-[3-(4-chlorophenyl)prop-2-yn-1-yl]-4-methylphenyl sulfonamido}-1-tosyl-1,6-dihydropyridine-3-carboxylate