Title of article
Thiophenol-catalyzed Claisen rearrangement and radical cyclization: formation of furo- and pyrano-coumarin derivatives
Author/Authors
Majumdar، نويسنده , , K.C. and Debnath، نويسنده , , P. K. Maji، نويسنده , , P.K.، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2007
Pages
4
From page
5265
To page
5268
Abstract
Regioselective synthesis of dihydrofurocoumarins and dihydropyranocoumarins in excellent yields from 4-prop-2-ynyloxy coumarin via a thiol mediated radical reaction is described. Alkenyl radicals are generated from easily available terminal alkynes and thiophenol. Thiophenol catalyzed the Claisen rearrangement of the 4-prop-2-ynyloxycoumarin ethers.
Keywords
Thiophenol , 3 , AIBN , 3] sigmatropic rearrangement , radical cyclization , Dihydrofurocoumarin , Dihydropyranocoumarin
Journal title
Tetrahedron Letters
Serial Year
2007
Journal title
Tetrahedron Letters
Record number
1855736
Link To Document