反应详情

The title compound of Step A (2.9 g, 14.1 mmol) in HBr (14 mL) was heated at 90° C. for 1 h. The mixture was then concentrated washed with PhCH3 and used without further purification in subsequent steps.

1. concentrationThe mixture was then concentrated
2. washwashed with PhCH3
3. customused without further purification in subsequent steps