反应详情

温度

50 °C

Tetrabutylammonium fluoride (1N tetrahydrofuran solution; 9.9 ml, 9.9 mmol) and acetic acid (592.9 mg, 9.87 mmol) were added to a solution of 4-methoxybenzyl 2-(acetoxymethyl)-5-[(tert-butyldimethylsilyl)oxymethyl]benzoate (905 mg, 1.97 mmol) obtained from Example 1-(8) in tetrahydrofuran (5 ml). The mixture was stirred at 50° C. for 1 hour, and then the solvent was distilled off under reduced pressure. The oily residue was subjected to chromatography on a silica gel (25 g) column (eluent; ethyl acetate:hexane=1:1) to give the title compound (500.1 mg, 74% yield) as a colorless amorphous solid.

1. distillationthe solvent was distilled off under reduced pressure