反应详情

1-[(3-Methoxycarbonyl-2-methylpropanoyl)amino]-1-cyclopentanecarboxylic acid, benzyl ester was prepared as described in Example 3 from 10.96 g (0.050 mol) of 1-amino-1-cyclopentanecarboxylic acid, benzyl ester and 7.31 g (0.050 mol) of 3-methoxycarbonyl-2-methylpropionic acid. Crude di-ester crystallized to give 13.57 g (78%) of an off-white solid, mp: 88°-93°. This was used without further purification.

1. customCrude di-ester crystallized