Addition of Dissimilar Carbenes across an Unsymmetrically Substituted Alkyne: Regio- and Stereoselective Synthesis of Trisubstituted 1,3-Dienes

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50836

Title:	Addition of Dissimilar Carbenes across an Unsymmetrically Substituted Alkyne: Regio- and Stereoselective Synthesis of Trisubstituted 1,3-Dienes
Authors:	;Connor,JM;Chen,MC;Holland,RL;Rheingold,AL
Contributors:	化學學系
Keywords:	FUNCTIONAL CONJUGATED DIENES;METALLACYCLOBUTENE COMPLEX;ISOMERIZATION
Date:	2011
Issue Date:	2012-03-27 18:11:02 (UTC+8)
Publisher:	國立中央大學
Abstract:	The formal addition of dissimilar carbenes across an unsymmetrically substituted alkyne has been achieved for the first time by a two-step sequence in which a cobalt alkyne complex undergoes reaction with a carbene addend (CHR(1)) to give a metallacyclobutene complex, followed by reaction with a second carbene addend (CHR(2)) to give a mixture of diene complexes. In situ treatment of the diene mixture with fluoride leads to desilylation and conversion to a single cobalt diene complex with a high degree of regio- and stereoselectivity.
Relation:	ORGANOMETALLICS
Appears in Collections:	[Department of Chemistry] journal & Dissertation

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