HRID2309090
反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
PROCEDURE
实验过程
0.84 g of triphenylphosphine is added to a solution of 0.63 g of 2-[(3S,4R)-4-acetylthio-3-methoxy-2-oxoazetidin-1-yl]-2-chloroacetic acid p-nitrobenzyl ester in 1.8 ml of dry tetrahydrofuran, and the mixture is stirred overnight at room temperature under nitrogen. The mixture is diluted with methylene chloride and washed with a cold, saturated, aqueous sodium bicarbonate solution. Additional washing with water, drying over sodium sulphate and concentrating by evaporation in vacuo yield the crude title compound which is purified by chromatography over silica gel with toluene/ethyl acetate (19:1 to 3:1).
WORKUP
后处理
- washwashed with a cold, saturated, aqueous sodium bicarbonate solution
- washAdditional washing with water
- dry with materialdrying over sodium sulphate
- concentrationconcentrating by evaporation in vacuo