Recent developments in the chemistry of low-coordinated organophosphorus compounds*
Masaaki Yoshifuji
Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
Abstract: Sterically protected organophosphorus compounds are described, involving diphosphenes, phosphaethenes, diphosphinidenecyclobutenes (DPCBs), phosphaalkynes, phosphaquinones, diphosphathienoquinones, and so on of coordination number 2 or 1. Application of the DPCBs as well as phosphinophosphaethenes as a ligand of transition-metal catalysts for several organic coupling reactions has been investigated.
Keywords: Organophosphorus; diphosphenes; phosphaethenes; diphosphinidenecyclobutenes; phosphaalkynes; phosphaquinones; diphosphathienoquinones; transition-metal catalysts; coupling reactions.
*Paper based on a presentation at the 7th IUPAC International Conference on Heteroatom Chemistry (ICHAC-7), Shanghai, China, 21-25 August 2004. Other presentations are published in this issue, pp. 1985-2132.