Photochemical reactions of transition metal organyl complexes with olefins .17. Light-induced [6+2] cycloadditions of dienes to tricarbonyl(eta(6)-1,3,5,7-cyclooctatetraene)chromium(0)

被引：5
|
作者：
Kreiter, CG
Eckert, R
机构：
[1] Fachbereich Chemie Der Universität Kaiserslautern, Erwin-Schrödinger-Straße
来源：
CHEMISCHE BERICHTE-RECUEIL | 1997年 / 130卷 / 01期
关键词：
chromium; chromium(0) complexes; cyclooctatetraene complexes; photochemistry; cycloadditions; photochemical [6+2] cycloadditions; dienes;
D O I：
10.1002/cber.19971300103
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Tricarbonyl(eta(6)-1,3,5,7-cyclooctatetraene)chromium (1) yields upon UV irradiation in ether at 233 K with 2,3-dimethyl-1,3-butadiene (2) or 2-methyl-1,3-butadiene (3) by [6+2] cycloadditions the correspondingly substituted tricarbonyl(eta(6)-bicyclo[4.2.2]deca-2,4,7-triene)chromium complexes 4, 5a and 5b. With ammonium cerium(IV) nitrate the organic ligand of complex 4, 9-isopropenyl-9-methyl-bicyclo[4.2.2]-deca-2,4,7-triene (6) is liberated. The complexes 4, 5a and 5b were characterised by IR and NMR spectroscopy, the ligand 6 by NMR spectroscopy.
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页码：9 / 12
页数：4
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