Synthesis of Novel 3-Allylbenzofurans via a Wittig Olefination and Claisen Rearrangement Sequence
作者:M. G. Kulkarni、Ravindra M. Rasne
DOI:10.1055/s-1997-1362
日期:1997.12
A short and novel synthesis of hitherto unknown 3-allylbenzofurans is described. Wittig olefination of protected 2-hydroxybenzaldehydes followed by Claisen rearrangement resulted in the formation of pent-4-en-als. These, on deprotection and dehydration, gave 3-allylbenzofurans.
A novel protocol for the synthesis of furo[2,3-b]benzofurans and dihydrofuro[2,3-b]benzofurans
作者:Mukund G. Kulkarni、Ravindra M. Rasne
DOI:10.1039/a803188f
日期:——
A Wittig olefination–Claisen rearrangement approach has been successfully applied to develop a novel protocol for the synthesis of the dihydrofuro[2,3-b]benzofuran and furo[2,3-b]benzofuran ring systems.