Regiospecific alkylation of 3-substituted-2-cyclohexen-1-ones. Synthesis and conformational analysis of 6-(carbethoxymethyl)-3-substituted-2-cyclohexen-1-ones
Regiospecific alkylation of 3-substituted-2-cyclohexen-1-ones. Synthesis and conformational analysis of 6-(carbethoxymethyl)-3-substituted-2-cyclohexen-1-ones
作者:Kenneth F. Podraza、Ronald L. Bassfield
DOI:10.1021/jo00286a023
日期:1989.12
Iodobenzene catalysed synthesis of spirofurans and benzopyrans by oxidative cyclisation of vinylogous esters
作者:Marsewi Ngatimin、Raphael Frey、Cecily Andrews、David W. Lupton、Oliver E. Hutt
DOI:10.1039/c1cc15015d
日期:——
Vinylogous esters bearing para or meta methoxy benzyl groups undergo oxidativecyclisation with 5-20 mol% iodobenzene and m-CPBA to give spirofuran or benzopyran containing heterocycles. The reaction allows rapid generation of skeletal complexity in good to excellent yields via a noveloxidativecyclisation.