Photocyclodimerization of 5-Methyl-2H-pyran-3(6H)-one

被引：0

作者：

Groesch, Ljubov ^{[1
]}

Kopf, Juergen ^{[1
]}

Margaretha, Paul ^{[1
]}

机构：

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

来源：

HELVETICA CHIMICA ACTA | 2008年 / 91卷 / 12期

关键词：

D O I：

10.1002/hlca.200890239

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The structures of the main products resulting from photocyclodimerization of the title compound 2 and of other 3-methyl-substituted 'oxacyclohex-2-en-1-ones' (=dihydropyranones) were determined by X-ray crystallography. In connection, the C-13-NMR chemical shifts of the cyclobutane C-atoms of these dimers allow a clear differentiation between head-to-head and head-to-tail regioisomers, all structurally related to those of isophorone (1).

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页码：2211 / 2215

页数：5

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