Phosphine-catalyzed β′-umpolung addition of nucleophiles to activated α-alkyl allenes

Tioga J. Martin, Venus G. Vakhshori, Yang S. Tran, Ohyun Kwon

Research output: Contribution to journalArticlepeer-review

57 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)2586-2589
Number of pages4
JournalOrganic Letters
Issue number10
StatePublished - May 20 2011
Externally publishedYes


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