title: Phosphine-catalyzed β'-umpolung addition of nucleophiles to activated α-alkyl allenes.
abstract: Highly functionalized alkenes can be prepared through phosphine-catalyzed β'-umpolung additions of nucleophiles (carbon-, oxygen-, nitrogen-, and sulfur-centered) to activated α-disubstituted allenes, providing many potentially useful synthetic intermediates in good to excellent yields, often with high levels of stereoselectivity for the product olefin geometry. Various substitution patterns around the allene are compatible with the process, showcasing the synthetic utility of allenes under the conditions of nucleophilic phosphine catalysis.
authors.affiliation: Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1569, United States.
authors.forename: Tioga J
authors.initials: TJ
authors.lastname: Martin
authors.forename: Venus G
authors.initials: VG
authors.lastname: Vakhshori
authors.forename: Yang S
authors.initials: YS
authors.lastname: Tran
authors.forename: Ohyun
authors.initials: O
authors.lastname: Kwon
mesh_terms: D000475:Alkenes / Q000138:chemical synthesis / Q000737:chemistry*; D002384:Catalysis; D020650:Combinatorial Chemistry Techniques; D015394:Molecular Structure; D010720:Phosphines / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D000475:Alkenes; D010720:Phosphines; C044646:phosphine