HETERODIENE CYCLOADDITIONS - PREPARATION AND TRANSFORMATIONS OF SOME SUBSTITUTED PYRANO[4,3-B][1]BENZOPYRANS

被引：33

作者：

COUTTS, SJ ^{[1
]}

WALLACE, TW ^{[1
]}

机构：

[1] UNIV SALFORD,DEPT CHEM & APPL CHEM,SALFORD M5 4WT,LANCS,ENGLAND

来源：

TETRAHEDRON | 1994年 / 50卷 / 40期

关键词：

D O I：

10.1016/S0040-4020(01)85668-4

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Heterodiene cycloadditions of 4-oxo-4H-1-benzopyrans with formyl, acetyl, or carboxyl substituents at C-3 to 1-alkoxy- or 1,1-dialkoxyalkenes produce 3-alkoxy- or 3,3-dialkoxy-4,4a-dihydropyrano[4,3-b][1]benzopyran-10-ones which are capable of a variety of selective transformations, including acid-induced epimerisation and/or retro-cycloaddition, reduction, hydrolysis and alcoholysis, in some cases under very mild conditions.

引用

页码：11755 / 11780

页数：26

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