反应详情

Following general procedure E and using 8-ethyl-6-trimethylsilanylethynyl-2,2,4,4-tetramethyl chroman (Intermediate 47, 0.137 g, 0.44 mmol), methanol and potassium carbonate (0.1 g, 0.72 mmol) followed by flash column chromatography over silica gel (230-400 mesh) using 5% ethyl acetate in hexane as the eluent, the title compound was obtained as an oil (0.066 g, 62%).