2-[(1-naphthalen-1-ylmethyl-piperidin-4-ylmethyl)-amino]-1H-benzimidazole-5-carboxylic acid methyl ester 、
二碳酸二叔丁酯 在
silica gel 、 dichloromethane methanol TEA 作用下,
以
1,4-二氧六环 为溶剂,
反应 11.0h,
以to obtain 2-[(1-naphthalen-1-ylmethyl-piperidin-4-ylmethyl)-amino]-benzimidazole-1,5-dicarboxylic acid 1-tert-butyl ester 5-methyl ester的产率得到2-[(1-naphthalen-1-ylmethyl-piperidin-4-ylmethyl)-amino]-benzimidazole-1,5-dicarboxylic acid 1-tert-butyl ester 5-methyl ester