REACTIONS OF LIGANDS OF COMPLEXES .57. AMIDINOCARBENE CHELATE COMPLEXES OF CHROMIUM AND MOLYBDENUM - SYNTHESIS, STRUCTURE AND CYCLOADDITIONS WITH ALKYNES

被引：13
|
作者：
DOTZ, KH [1 ]
KROLL, F [1 ]
HARMS, K [1 ]
机构：
[1] UNIV MARBURG,FACHBEREICH CHEM,W-3550 MARBURG,GERMANY
来源：
JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1993年 / 459卷 / 1-2期
关键词：
D O I：
10.1016/0022-328X(93)86069-T
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Tetracarbonyl(formamidinocarbene)complexes of chromium and molybdenum 4a-j are obtained from alkoxycarbene or acetoxycarbene complexes 1a-c upon reaction with the formamidines 2a-e. Pentacarbonyl(formamidinocarbene) intermediates 3 can be isolated at temperatures < - 10-degrees-C. The molybdenum complex 4f reveals a planar five-membered chelate ring containing a short metal-carbene bond. As indicated by their C-13-NMR spectra the amidinocarbene chelates 4 undergo rapid CO exchange even at low temperatures. Also, they undergo cycloaddition reactions with 3-hexyne to give 2,3-dihydropyrrolones 6,7 after oxidative workup.
引用
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页码：169 / 176
页数：8
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