反应详情

A solution of the product from Example 79A (200 mg, 1.11 mmol) and N,N-dimethylformamide dimethyl acetal (0.15 mL, 1.11 mmol) in toluene (10 mL) was refluxed for 2.5 hours. After cooling to room temperature the solution was concentrated under vacuum to provide the title compound as a colorless solid (260 mg, 100%).

1. concentrationwas concentrated under vacuum