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.
NHC配体的立体电子性质使铑催化炔烃的双氢磷酸化避免了二膦产物使催化剂失活。
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.
New Approach to Vinylphosphines Based on Pd- and Ni-Catalyzed Diphenylphosphine Addition to Alkynes
作者:Marina A. Kazankova、Irina V. Efimova、Andrew N. Kochetkov、Vladimir V. Afanas'ev、Irina P. Beletskaya、Pierre H. Dixneuf
DOI:10.1055/s-2001-12317
日期:——
The catalytic addition of Ph2PH to phenylacetylene regioselectively leads to the Ph2P-CH=CHPh isomer with Pd(PPh3)4 in acetonitrile and to the Ph2P-C(Ph)=CH2 isomer with Ni(acac)2/(EtO)2P(O)H in benzene. High selectivity were also obtained for the catalytic addition of Ph2PH to t BuC≡CH and to PhC≡CPh.
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