Synthetic communications

P (RNCH2CH2) 3N: An efficient promoter for the synthesis of 3-substituted coumarins

P Kisanga, X Fei, J Verkade

Index: Kisanga, Philip; Fei, Xiangshu; Verkade, John Synthetic Communications, 2002 , vol. 32, # 8 p. 1135 - 1144

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Citation Number: 16

Abstract

ABSTRACT The title compounds wherein R= Me or i-Pr function as efficient promoters for the formation of coumarins in good to excellent yields (80–95%) from salicylaldehydes and di-activated methylene compounds of the type R′ CH2CO2Et (R′= CO2Et, COMe, CN). Although the yields are not generally superior to those reported in the literature, our methodology is more convenient in that milder conditions and shorter reaction times are ...

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