4-Hydroxycoumarin and related systems: sitoselectivity of the mitsunobu reaction with prenyl alcohols

摘要

The Mitsunobu reaction leads to the formation of new C-C bonds between prenyl alcohols and 1,3-dicarbonyl compounds like 4-hydroxycoumarin or its nitrogen isoster. Buchapine was obtained through a one-pot procedure from 4-hydroxy-2-quinolone and dimethylallyl alcohol.