反应详情

The compound 1 (301 mg, 0.9 mmol) was converted to the acetal with 1,1-dimethoxycycloheptane (1.30 g, 9 mmol) in the same manner as the example 1 to give the compound 4 (288 mg, 67%). Rf 0.68 (Al2O3 60-type E, 2:1 hexane -EtOAc).