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

页码：169 / 176

页数：8

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