Double hydrophosphination of alkynes promoted by rhodium: the key role of an N-heterocyclic carbene ligand
作者:Andrea Di Giuseppe、Roberto De Luca、Ricardo Castarlenas、Jesús J. Pérez-Torrente、Marcello Crucianelli、Luis A. Oro
DOI:10.1039/c5cc09156j
日期:——
The stereoelectronic properties of the NHC ligand make possible the rhodium-catalysed double hydrophosphination of alkynes avoiding the catalyst deactivation by the diphosphine product.
Preparation of vinylphosphines by means of free radical addition of diphenylphosphine to alkynes and allenes
作者:Terence N. Mitchell、Kerstin Heesche
DOI:10.1016/0022-328x(91)86141-c
日期:1991.5
readily to alkynes and allenes under freeradical conditions. Alkynes normally give E-vinylphosphines as the primary (kinetic) product, but Z-vinylphosphines are the main products isolated. Allenes generally give complex product mixtures in which the predominant components are vinyl phosphines formed via addition of the Ph2P. radical to the central carbon atom of the allene fragment.
作者:M. A. Kazankova、I. V. Efimova、A. N. Kochetkov、V. V. Afanas'ev、I. P. Beletskaya
DOI:10.1023/a:1022548303903
日期:——
Intermolecular hydrophosphination of terminal and internal alkynes with diphenylphosphine, catalyzed by palladium and nickel complexes, was accomplished for the first time. The reaction follows the syn-addition pattern. Conditions were found which ensure regioselective addition with predominant or exclusive formation of the corresponding alpha- or beta-adduct.
MITCHELL, TERENCE N.;HEESCHE, KERSTIN, J. ORGANOMET. CHEM., 409,(1991) N-2, C. 163-170