CROWN-CONTAINING STYRYL DYES .8. CATION-DEPENDENT CONCERTED [2+2]-AUTOPHOTOCYCLOADDITION OF PHOTOCHROMIC 15-CROWN-5 ETHER BETAINES

被引：37

作者：

ALFIMOV, MV

GROMOV, SP

STANISLAVSKII, OB

USHAKOV, EN

FEDOROVA, OA

机构：

[1] N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, 117913

来源：

RUSSIAN CHEMICAL BULLETIN | 1993年 / 42卷 / 08期

关键词：

CROWN-CONTAINING STYRYL DYES; COMPLEXES WITH MG2+; PHOTOCYCLODIMERIZATION; CYCLOBUTANE DERIVATIVES; H-1 AND C-13 NMR SPECTRA;

D O I：

10.1007/BF00699938

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Styryl dyes containing a crown ether group and a heteroaromatic moiety with a sulfoalkyl N-substituent (1a,b) undergo photocyclodimerization in acetonitrile in the presence of Mg(ClO4)2 to give only the type A isomer of cyclobutane derivative (2a,b). The photochemical regio- and stereoselectivity of the cycloaddition is explained by self-organization of the trans-isomers of the styryl dyes upon complexation with the Mg2+ cations into dimers with a fixed mutual arrangement of multiple bonds.

引用

页码：1385 / 1389

页数：5

共 50 条

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