An improved synthesis of 3-(1,1-dimethylallyl)coumarins
作者:Rosario Hernández-Galán、Javier Salvá、Guillermo M. Massanet、Isidro G. Collado
DOI:10.1016/s0040-4020(01)80355-0
日期:——
The syntheses of several 3-(1,1-dimethylallyl)coumarins, simple or bearing additional furan or pyran rings is achieved starting from the corresponding C-3 unsubstituted derivatives. The key step involves Ireland-Claisen rearrangements of allyl esters.