6714-01-8Relevant academic research and scientific papers
Dimerization of 1-alkynes catalyzed by RhCl(PMe3)3. Isolation of the intermediate (alkynyl)(vinyl)rhodium(III) complexes
Kovalev, I. P.,Yevdakov, K. V.,Strelenko, Yu. A.,Vinogradov, M. G.,Nikishin, G. I.
, p. 139 - 146 (1990)
The dimerization of 1-alkynes catalyzed by RhCl(PMe3)3 yields conjugated enynes I and II (I/II = 1.4 - 2.4), with a selectivity of 95 - 98 percent.The data indicate that the reaction proceeds by alkyne insertion into the metal-hydride bond of the intermediate (alkynyl)(hydride)RhIII complexes VII, VIII to give the (alkynyl)(vinyl)RhIII species cis- (IX) and cis- (X) which were isolated.The thermal decomposition of IX and X in solution gives the enynes I and II correspondingly.
Skeletal change in the PNP pincer ligand leads to a highly regioselective alkyne dimerization catalyst
Weng, Wei,Guo, Chengyun,Celenligil-Cetin, Remle,Foxman, Bruce M.,Ozerov, Oleg V.
, p. 197 - 199 (2008/02/07)
A Rh complex of a bulky diarylamino-based PNP pincer ligand is a robust catalyst for the dimerization of terminal alkynes and highly selective for the trans-enyne product. The Royal Society of Chemistry 2006.
DIMERIZATION AND CODIMERIZATION OF MONOSUBSTITUTED ACETYLENES BY THE ACTION OF PALLADIUM COMPLEXES
Selimov, F. A.,Rutman, O. G.,Dzhemilev, U. M.
, p. 1621 - 1624 (2007/10/02)
The linear dimerization and codimerization of C5-C12 α-acetylenes with palladium catalyst were investigated systematically.It was shown that the catalyst system Pd(acac)2-PPh3-(C2H5)3Al can be used for selective transformation of α-acetylenes into the corresponding alkenylacetylenes with fairly high yields.
