反应详情

温度

90 °C

A suspension of crude 32 (35.10 g) in AcOH 80% (576 mL) in a 1 L round-bottom flask was heated at 90° C. for 18 h, cooled to r.t. to form a precipitate which was collected by filtration to give 33 (18.41 g, 32.8 mmol, 58% yield over two steps) as a beige solid. MS (m/z): 561.1 (M+1)

1. temperaturecooled to r.t.
2. customto form a precipitate which
3. filtrationwas collected by filtration