AN IMPROVED SYNTHESIS OF DIBENZOFURANS BY A FREE-RADICAL CYCLIZATION

被引：28

作者：

WASSMUNDT, FW

PEDEMONTE, RP

机构：

[1] Department of Chemistry, University of Connecticut, Storrs

来源：

JOURNAL OF ORGANIC CHEMISTRY | 1995年 / 60卷 / 16期

关键词：

D O I：

10.1021/jo00121a016

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Reaction conditions for the formation of dibenzofurans from diazotized o-(aryloxy)anilines have been examined. Several promoters (hydroquinone, SnCl2, NaI, CuSO4, FeSO4, etc.) have been discovered; these act as electron donors and promote a free-radical mechanism. The best of these is FeSO4 which shortens the reaction time from hours to minutes and contributes to high yields (77-83%). We have been able to transform the cyclization to a reliable and convenient synthesis.

引用

页码：4991 / 4994

页数：4

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