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Photochemical reactions of transition metal organyl complexes with olefins, 17. Light‐Induced [6+2] Cycloadditions of Dienes to Tricarbonyl(η6‐1,3,5,7‐cyclooctatetraene)chromium(0)

 

作者: Cornelius G. Kreiter,   Ralf Eckert,  

 

期刊: Chemische Berichte  （WILEY Available online 1997）
卷期: Volume 130, issue 1  

页码: 9-12

 

ISSN:0009-2940

 

年代: 1997

 

DOI:10.1002/cber.19971300103

 

出版商: WILEY‐VCH Verlag

 

关键词: Chromium;Chromium(0) complexes;Cyclooctatetraene complexes;Photochemistry;Cycloadditions;Photochemical [6+2] cycloadditions;Dienes

 

数据来源: WILEY

 

摘要:

AbstractTricarbonyl(η6‐1,3,5,7‐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(η6‐bicyclo[4.2.2]deca‐2,4,7‐triene)chromium complexes4,5aand5b. With ammonium cerium(IV) nitrate the organic ligand of complex4, 9‐isopropenyl‐9‐methyl‐bicyclo[4.2.2]‐deca‐2,4,7‐triene (6) is liberated. The complexes4,5aand5bwere characterised by IR and NMR spectro

 

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