甲基4-[[叔-butyl(二甲基)甲硅烷基]羟甲基]苯甲酸盐

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of 4-hydroxymethyl-benzoic acid methylester (2 gm) and triethylamine (3.36 mL) in dichloromethane (15 mL) was treated with t-butyldimethylsilyltriflate (4.47 gm) at −78° C. After 30 min the contents were allowed to warm up to the room temperature and continued the stirring for another 30 min. Water (30 mL) and ethylacetate (60 mL) were added to the reaction mixture and the organic layer was washed with 0.3 M KHSO4, water and brine, dried over MgSO4 and filtered. The solvent was evaporated and the residue was subjected to flash chromatography on silica column by eluting with 10% EtOAc/hexane to obtain 4-(t-butyldimethylsilyloxymethyl) benzoic acid methyl ester (3.3 gm, 95% yield). stirring for another 30 min the organic layer was washed with 0.3 M KHSO4, water and brine dried over MgSO4 filtered The solvent was evaporated by eluting with 10% EtOAc/hexane