5-MEMBERED-NIOBACYCLE FORMATION FROM AN ALLYL-ALKYNE COUPLING REACTION

被引:36
作者
BIASOTTO, F
ETIENNE, M
DAHAN, F
机构
[1] Laboratoire de Chimie de Coordination du CNRS, UPR 8241, 31 077 Toulouse Cedex
关键词
D O I
10.1021/om00004a046
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Reaction of Tp*NbCl2(PhC equivalent to CR) (R = CH3, Ph) with 1 equiv of allyl Grignard gives I moderate yield of five-membered niobacycles Tp*(Cl)Nb[C(Ph)C(R)CHCH(CH3)] resulting from an allyl-alkyne coupling reaction accompanied by a 1,3-hydrogen shift in the allyl moiety. Both the spectroscopic and X-ray crystal data indicate an eta(4)-butadienyl formulation is appropriate for the new ligand.
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收藏
页码:1870 / 1874
页数:5
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