HRID1464728
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
A solution of (3S,4S)-1-[1-(allyloxycarbonyl)-1-(triphenylphosphoranediyl)methyl]-3-[(1R)-1-(tert-butyldimethylsilyloxy)ethyl]-4-[(1R)-1-{(methylthio)thiocarbonyl}ethyl]-2-oxoazetidine (325 mg) in toluene (3 ml) was heated under reflux for 4.5 hours. The solvent was removed under reduced pressure and the residue was purified by silica gel column chromatography [ethyl acetate-hexane (1:3, V/V)] to afford allyl (4R,5S,6S)-6-[(1R)-1-(tert-butyldimethylsilyloxy)ethyl]-4-methyl-3-methylthio-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate (164 mg).
WORKUP
后处理
- temperatureunder reflux for 4.5 hours
- customThe solvent was removed under reduced pressure
- customthe residue was purified by silica gel column chromatography [ethyl acetate-hexane (1:3, V/V)]