Synthesis of 2H-1-benzopyran-2,4(3H)-dione-3-carboxamide and 2H,3H-[1]benzopyrano[4,3-b]pyrano-2-hydroxy-3-carboxamide-4,5-dione derivatives via carbon suboxide

被引：1

作者：

Bonsignore, L

Loy, G

机构：

[1] Dipto. Farmaco Chimico Tecnologico, Università di Cagliari, Via Ospedale 72

来源：

HETEROCYCLES | 1997年 / 45卷 / 11期

关键词：

D O I：

10.3987/COM-97-7885

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The reaction of substituted 2-hydroxybenzamides with carbon suboxide is described. By varying the weight ratio of the reagent, this reaction leads to the coumarin and/or pyranocoumarin derivatives in one step and with satisfactory yields.

引用

页码：2131 / 2136

页数：6

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