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A mechanistic study of the C-P bond cleavage reaction of 1,2-(PH2)2-C6H4 with nBuLi/Sb(NMe2)3.
MedLine Citation:
PMID:  19002333     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
In situ 31P NMR spectroscopic studies of the reaction of the primary diphosphine 1,2-(PH2)2-C6H4 with the mixed-metal base system nBuLi/Sb(NMe2)3, combined with X-ray structural investigations, strongly support a mechanism involving a series of deprotonation steps followed by antimony-mediated reductive C-P bond cleavage. The central intermediate in this reaction is the tetraphosphide dianion [C6H4P2]2(2-) ([]) from which the final products, the 1,2,3-triphospholide anion [C6H4P3]- () and [PhPHLi] (.Li), are evolved. An EPR spectrocopic study suggests that homolytic C-P bond cleavage is likely to be involved in this final step.
Authors:
Ruth Edge; Robert J Less; Vesal Naseri; Eric J L McInnes; Robert E Mulvey; Dominic S Wright
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Publication Detail:
Type:  Journal Article     Date:  2008-10-08
Journal Detail:
Title:  Dalton transactions (Cambridge, England : 2003)     Volume:  -     ISSN:  1477-9226     ISO Abbreviation:  Dalton Trans     Publication Date:  2008 Dec 
Date Detail:
Created Date:  2008-11-12     Completed Date:  2009-01-26     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101176026     Medline TA:  Dalton Trans     Country:  England    
Other Details:
Languages:  eng     Pagination:  6454-60     Citation Subset:  -    
Affiliation:
School of Chemistry, The University of Manchester, Oxford Road, Manchester, UK M139PL.
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