反应详情

The product of example 5, step (d) (1 g) was dissolved in bromoform (14 ml) and iso-amyl nitrite (0.1 ml) and heated at 40° C. for 5 hr. The reaction mixture was then evaporated to dryness and purified by flash chromatography on silica gel with 20% ethyl acetate in dichloromethane, yielding the subtitled compound as a yellow solid (208 mg).

1. customThe reaction mixture was then evaporated to dryness
2. custompurified by flash chromatography on silica gel with 20% ethyl acetate in dichloromethane