SYNTHESIS OF 2-OXO-2H-PYRAN-5-CARBOXYLATE DERIVATIVES

被引：11

作者：

KVITA, V

机构：

[1] Zentrale Forschungslaboratorien, Basel

来源：

HELVETICA CHIMICA ACTA | 1990年 / 73卷 / 02期

关键词：

D O I：

10.1002/hlca.19900730220

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Synthesis of 2‐Oxo‐2H‐pyran‐5‐carboxylate Derivatives 3‐Substituted diethyl pent‐2‐enedioates are easily formylated by means of ethyl formate/TiCl4/4‐methylmorpholine to produce the ethoxymethylene derivatives, which are smoothly cyclized either with HCOOH or PPA to corresponding 2‐oxo‐2H‐pyran‐5‐carboxylate derivatives. Copyright © 1990 Verlag GmbH & Co. KGaA, Weinheim

引用

页码：411 / 416

页数：6

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