3,3-dimethyl-4-methoxycarbonyl-butanoic acid N-(2'-cyanobiphenyl-4-ylmethyl)-N-propyl-amide 、
三正丁基叠氮化锡 、
sodium hydroxide 在
二氯甲烷 、
Sodium sulfate-III 、 silica gel 作用下,
以
邻二甲苯 为溶剂,
反应 4.5h,
以yields pure 4-carboxy-3,3-dimethyl-butanoic acid N-propyl-N-[2'-(1H-tetrazol-5-yl)biphenyl-4-ylmethyl]-amide that的产率得到4-carboxy-3,3-dimethyl-butanoic acid N-propyl-N-[2'-(1H-tetrazol-5-yl)biphenyl-4-ylmethyl]-amide