反应详情

Compound (35) (93 mg) obtained in item (3) above was dissolved in tetrahydrofuran (4.5 ml), to which was then added N,N-dimethylchloroforminium chloride (135 mg) under ice-cooling. The resulting mixture was allowed to undergo the reaction for 30 minutes. The reaction solution containing compound (36) thus produced was then added to a 0.2M diazomethane solution (30 ml) in diethylether and the reaction was maintained at room temperature for 1 hour. The reaction solution so obtained was filtered and the filtrate was concentrated to give the titled compound (37) (83 mg) as a syrup. Yield: 75%.

1. temperaturecooling
2. customthe reaction for 30 minutes
3. customthus produced
4. customThe reaction solution so obtained
5. filtrationwas filtered
6. concentrationthe filtrate was concentrated