SOLID-STATE PHOTOCYCLODIMERIZATION OF 1-THIOCOUMARIN (=2H-1-BENZOTHIOPYRAN-2-ONE)

被引：13

作者：

KLAUS, CP ^{[1
]}

THIEMANN, C ^{[1
]}

KOPF, J ^{[1
]}

MARGARETHA, P ^{[1
]}

机构：

[1] UNIV HAMBURG,INST ORGAN CHEM,D-20146 HAMBURG,GERMANY

来源：

HELVETICA CHIMICA ACTA | 1995年 / 78卷 / 05期

关键词：

D O I：

10.1002/hlca.19950780504

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Irradiation (<lambda > 390 nm) of 2H-1-benzothiopyran-2-one (1) in the solid state affords selectively 6a alpha,6b alpha,12b alpha,12c alpha-tetrahydrocyclobuta[1,2-c:4,3-c']bis[1]benzothiopyran-6,7-dione (2), the head-to-head (HH) cis-cisoid-cis dimer, while irradiation of 1 in the solid stare using shorter wavelengths (lambda > 340 nm) affords a mixture of all four cis-fused tricyclic dimers 2-5. These results represent a novel wavelength effect in solid-state photochemistry.

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页码：1079 / 1082

页数：4

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