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
收藏
页码：411 / 416
页数：6
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