反应详情

A solution of 5.5 g (11.3 mmol) of 4-methoxycarbonyl-4-methyl-pentanoic acid N-butyl-N-(2'-cyanobiphenyl-4-ylmethyl)-amide and 4.9 g (14.2 mmol) of tributyltin azide in 50 ml of o-xylene is reacted and worked up analogously to Example 2 to yield 4-carboxy-4-methyl-pentanoic acid N-butyl-N-[2'-(1H-tetrazol-5-yl)biphenyl4-ylmethyl]-amide in the form of a beige-coloured foam that has an Rf value of 0.34 [toluene/isopropanol/glacial acetic acid (170:30:2)].