2-amino-5-diethylamino-N-[(1-diphenylmethylpiperidin-4-yl)methyl]benzamide 、
异氰酸正丁酯 在
silica gel 作用下,
以
氯仿 为溶剂,
反应 16.0h,
以to give 5-diethylamino-2-(N'-n-butylureido)-N-[(1-diphenylmethylpiperidin-4-yl)methyl]benzamide, 366 mg (51%)的产率得到2-(N'-n-butylureido)-5-diethylamino-N-[(1-diphenylmethylpiperidin-4-yl)-methyl]benzamide