HRID1464728

反应详情

EQUATION

反应方程式

HRID 1464728 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

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

  1. temperatureunder reflux for 4.5 hours
  2. customThe solvent was removed under reduced pressure
  3. customthe residue was purified by silica gel column chromatography [ethyl acetate-hexane (1:3, V/V)]