I. V. Efimova

Synthesis of vinyldiphenylphosphines by Pd-catalyzed cross-coupling reactions of diphenylphosphine with alkenylhalides

Abstract α- and β-alkoxy (α- and β-dialkylamino)vinylphosphines were synthesized by palladium catalyzed reactions of the corresponding vinylhalides with diphenylphosphine or diphenyltrimethylsilylphosphine in high yields.

Synthesis of Vinylphosphines by Hydrophosphination of Alkynes in the Presence of Transition Metal Complexes

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 α- or β-adduct.

Formation of a PIII−C(sp2) bond by addition of diphenyl(trimethylsilyl)phosphine to activated acetylenes

Diphenyl(trimethylsilyl)phosphine reacts with alkoxy(alkyl)acetylenes to give mixtures of addition products, (2-alkoxy-2-trimethylsilylalkenyl)diphenylphosphines and (2-alkoxyalkenyl)diphenylphosphines. The reaction is sensitive to the solvent; in MeCN, it gives only nonsilylated products. (1-Alkoxyethenyl)diphenylphosphines were obtained as the main products upon the reaction of Ph2PSiMe3 with terminal alkoxyalkynes, irrespective of the reaction conditions.