Triethylamine → HCID 22915149, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 12.0 g of 2-bromo-5-hydroxy -3-methoxy-6-methyl-benzoic acid in 700 ml of acetonitrile were added at -5° C. 27.7 g of tert-butyldimethylchlorosilane and 18.5 g of triethylamine. The mixture was stirred for 30 min at -5° C. and for 16 h at 20° C. The solvent was evaporated in vacuo and the solid residue was washed with water and dried in vacuo. A solution of this material in 200 ml of ethanol was heated for 8 h to 80° C. The solvent was evaporated in vacuo and the residue was recrystallized from pentane to yield 12.0 g of 2-bromo-5-(tert-butyl-dimethylsilanyloxy)-3-methoxy-6-methyl-benzoic acid as white crystals, m.p. 120°-125° C.

Provenance & Evidence