BOC-甘氨酸 、
5-acetyl-3-[(benzo[1,3]dioxol-5-yl)-(piperidin-4-ylamino)-methylidene]-2-indolinone 在
O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、
N,N-二异丙基乙胺 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 48.0h,
以65%的产率得到5-acetyl-3-[(benzo[1,3]dioxol-5-yl)-(1-(2-tert-butoxycarbonylamine-acetyl-piperidin-4-ylamino)-methylidene)]-2-indolinone