ALPHA-HALOGENOKETONES .13. CHROMONE EPOXIDES - THEIR SYNTHESIS AND ACID-CATALYZED REARRANGEMENT

被引：12

作者：

DONNELLY, JA

MALONEY, DE

机构：

[1] Chemistry Department, University College

来源：

TETRAHEDRON | 1979年 / 35卷 / 24期

关键词：

D O I：

10.1016/S0040-4020(01)99502-X

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The chromone epoxide ring system has been synthesised. Base-catalysed cyclization and dehydrobromination of α-bromo-o-acyl (aroyl) oxyacetopheones or 2-bromo-1, 3-diones yielded 3-substituted chromone epoxides. Acid-catalysed rearrangement of a 2-methylchromone epoxide in an aprotic solvent gave a 2-methylenech-romanonol, while a 3-methoxymethylchromone epoxide fragmented to chromonol under these conditions; in alchols, chromone epoxides gave 2-alkoxychromanonols. © 1979.

引用

页码：2875 / 2881

页数：7

共 20 条

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