HRID1710252

反应详情

EQUATION

反应方程式

HRID 1710252 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

2

PROCEDURE

实验过程

Analogously to Example 23, 646 mg (1.5 mmole) of (3S,4R)-4-(2-p-nitrobenzyloxycarbonylaminoethylthiothiocarbonylthio)-3-methoxy-2-oxoazetidine in 22 ml of absolute toluene and 5.5 ml of absolute dimethylformamide are reacted with 848 mg of 2-ethoxy-2-hydroxyacetic acid p-nitrobenzyl ester in the presence of freshly dried molecular sieves. After working up and chromatography over silica gel the title compound is obtained.