Alkyne-to-vinylidene transformation on trans-(Cl)Rh(phosphine)2: acceleration by a heterocyclic ligand and absence of bimolecular mechanism.
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.
Grotjahn
Douglas B
DB
Department of Chemistry and Biochemistry, 5500 Campanile Drive, San Diego State University, San Diego, CA 92182-1030, USA. grotjahn@chemistry.sdsu.edu
Zeng
Xi
X
Cooksy
Andrew L
AL