甲基磺酰胺 、 rac-(2'S,3S,4'R)-6-chloro-4'-[5-chloro-2-(1-hydroxycarbonyl-1-propyl-butoxy)-phenyl]-2'-(5-chloro-2-methyl-phenyl)spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dione 在
N,N'-羰基二咪唑 、 sodium hydride 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 5.0h,
生成
(2'S,3S,4'R)-6-chloro-4'-[5-chloro-2-(1-methanesulfonylaminocarbonyl-1-propyl-butoxy)-phenyl]-2'-(5-chloro-2-methyl-phenyl)-spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dione