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
收藏
页码：1994 / 2001
页数：8
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