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
2-(t-Butyldimethylsilyloxy)ethyl trifluoromethanesulfonate (20.9 mg) is added to a solution of 32.3 mg of allyl(1R,5S,6S)-2-[(3S,5S)-1-allyloxycarbonyl-5-(imidazo[5,1-b]thiazol-2-yl)methylpyrrolidin-3-yl]thio-6-((1R)-1-hydroxyethyl)-1-methylcarbapen-2-em-3-carboxylate described in Example 23-a) in 0.5 ml of dry dichloroethane, and the mixture is stirred in an argon atmosphere at room temperature for 2 hr. The excess reagent is removed by evaporation under reduced pressure to give allyl(1R,5S,6S)-2-[(3S,5S)-1-allyloxycarbonyl-5-[6-(2-t-butyldimethylsilyloxyethyl)imidazo[5,1-b]thiazolium-2-yl]methylpyrrolidin-3-yl]thio-6-((1R)-1-hydroxyethyl)-1-methylcarbapen-2-em-3-carboxylate trifluoromethanesulfonate as a brown viscous material.
WORKUP
后处理
- customThe excess reagent is removed by evaporation under reduced pressure