title: Rhodium-catalyzed asymmetric addition of terminal alkynes to diarylphosphinylallenes.
abstract: The presence of an acid was found to be essential in the rhodium-catalyzed asymmetric addition of terminal alkynes to diarylphosphinylallenes giving exo-enynes in high yields with high regio- and enantioselectivity. The stereochemical outcome is determined at the protonolysis of the pi-allylrhodium(I) intermediate involved in the catalytic cycle.
authors.affiliation: Department of Chemistry, Graduate School of Science, Sakyo, Kyoto, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Nishimura
authors.forename: Xun-Xiang
authors.initials: XX
authors.lastname: Guo
authors.forename: Tamio
authors.initials: T
authors.lastname: Hayashi
mesh_terms: D000466:Alkadienes / Q000138:chemical synthesis* / Q000737:chemistry; D000480:Alkynes / Q000737:chemistry*; D002384:Catalysis; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D015394:Molecular Structure; D009943:Organophosphorus Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D011522:Protons; D012238:Rhodium / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D000466:Alkadienes; D000480:Alkynes; D009943:Organophosphorus Compounds; D011522:Protons; C025947:propadiene; D012238:Rhodium