HRID260111

反应详情

EQUATION

反应方程式

HRID 260111 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

3

PROCEDURE

实验过程

A solution of methyl (E) 6-(1,3-dihydro-7-methyl-3-oxo-4-p-toluenesulfonyloxy-6-vinylisobenzofuran-5-yl)-4-methyl-4-hexenoate (17.7 g) and tris(triphenylphosphine) rhodium chloride (1.2 g) in benzene (180 ml) and ethanol (180 ml) was hydrogenated for 11 hours. The solvents were removed under vacuum and the residue was crystallized from ethyl acetate/tert butyl methyl ether to afford methyl (E) 6-(1,3-dihydro-6-ethyl-7-methyl-3-oxo-4-p-toluenesulfonyloxyisobenzofuran-5-yl)-4-methyl-4-hexenoate, mp 101.3°-102.8° C.

WORKUP

后处理

  1. customThe solvents were removed under vacuum
  2. customthe residue was crystallized from ethyl acetate/tert butyl methyl ether