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.
Regio- and Stereoselective Synthesis of Alkenylphosphines: A Rhodium-Catalyzed Hydrophosphination of Alkynes Using a Silylphosphine
作者:Minoru Hayashi、Yutaka Matsuura、Yutaka Watanabe
DOI:10.1021/jo061739f
日期:2006.11.1
A novel rhodium-catalyzed hydrophosphination of alkynes using a silylphosphine as a phosphino group source is described. A variety of alkynes, both terminal and internal ones with aryl, alkyl, and carboxyl groups, gave the corresponding alkenylphosphines in a highly regioselective and syn-selective manner. Alkenes with an electron-withdrawing group also gave the corresponding adducts in good yields