1-(2-(2,6-dioxopiperidin-3-yl)-1,3-dioxoisoindolin-5-yl)piperidin-4-carboxylic acid 、
benzyl (3S)-3-methylpiperazine-1-carboxylate hydrochloride 在
N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成 benzyl (3S)-4-[2-[4-[1-[2-(2,6-dioxo-3-piperidyl)-1,3-dioxoisoindolin-5-yl]piperidine-4-carbonyl]piperazin-1-yl]ethyl]-3-methylpiperazine-1-carboxylate