Literature DB >> 16506748

Alkyne-to-vinylidene transformation on trans-(Cl)Rh(phosphine)2: acceleration by a heterocyclic ligand and absence of bimolecular mechanism.

Douglas B Grotjahn1, Xi Zeng, Andrew L Cooksy.   

Abstract

Alkyne-to-vinylidene transformation on square-planar trans-(Cl)Rh(phosphine)2 has been proposed to proceed by a mechanism with a key step being bimolecular transfer of hydridic H to an alkynyl carbon. Labeling studies reported here are inconsistent with this pathway. In addition, an imidazolyl substituent accelerates the transformation.

Entities:  

Year:  2006        PMID： 16506748     DOI： 10.1021/ja058736p

Source DB:  PubMed          Journal:  J Am Chem Soc        ISSN： 0002-7863            Impact factor:   15.419


  5 in total

1.  Gold-catalyzed 1,2-migration of silicon, tin, and germanium en route to C-2 substituted fused pyrrole-containing heterocycles.

Authors:  Ilya V Seregin; Vladimir Gevorgyan
Journal:  J Am Chem Soc       Date:  2006-09-20       Impact factor: 15.419

2.  Tandem cyclization of alkynes via rhodium alkynyl and alkenylidene catalysis.

Authors:  Jung Min Joo; Yu Yuan; Chulbom Lee
Journal:  J Am Chem Soc       Date:  2006-11-22       Impact factor: 15.419

3.  Multisubstituted N-fused heterocycles via transition metal-catalyzed cycloisomerization protocols.

Authors:  Ilya V Seregin; Alex W Schammel; Vladimir Gevorgyan
Journal:  Tetrahedron       Date:  2008-07-14       Impact factor: 2.457

Review 4.  Metal vinylidenes as catalytic species in organic reactions.

Authors:  Barry M Trost; Andrew McClory
Journal:  Chem Asian J       Date:  2008-02-01

5.  DFT calculations bring insight to internal alkyne-to-vinylidene transformations at rhodium PNP- and PONOP-pincer complexes.

Authors:  Nasir A Rajabi; Claire L McMullin
Journal:  RSC Adv       Date:  2021-03-23       Impact factor: 3.361
  5 in total

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