Interconversion of cis- and trans-Fused Oxabicyclo[5.2.0]nonan-2-ones

被引：2

作者：

Schmidt, Kerstin ^{[1
]}

Margaretha, Paul ^{[1
]}

机构：

[1] Univ Hamburg, Dept Chem, D-20146 Hamburg, Germany

来源：

HELVETICA CHIMICA ACTA | 2011年 / 94卷 / 11期

关键词：

Photocycloadditions; Oxepinones; Cycloadditions; Oxabicyclo[5; 2; 0]nonan-2-ones; CARBON-ATOM; ALKENES; PHOTOCYCLOADDITION; CYCLOADDITION;

D O I：

10.1002/hlca.201100203

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

On irradiation (350 nm) in the presence of alkenes (2,3-dimethylbut-2-ene, 1,1-dimethoxyethene, and 2,4,4-trimethylpent-1-ene), benzoxepinone 1 and dioxepinone 2 are converted into mixtures of cis- and trans-fused oxabicyclo[5.2.0]nonan-2-ones. Their relative thermodynamic stabilities (as reflected by the observed diastereoisomer ratios after equilibration with basic alumina) depend on the substitution pattern of the alkene moiety.

引用

页码：1994 / 2001

页数：8

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