P(NMe<sub>2</sub>)<sub>3</sub>-Mediated Umpolung Alkylation and Nonylidic Olefination of α-Keto Esters
作者:Sunewang Rixin Wang、Alexander T. Radosevich
DOI:10.1021/acs.orglett.5b01784
日期:2015.8.7
A commercial phosphorus-based reagent (P(NMe2)(3)) mediates,umpolung alkylation of methyl aroylformates with benzylic and allylic bromides, leading to either Barer-type addition or ylide-free olefination products upon workup. The reaction sequence is initiated, by a two-electron redox addition of the tricoordinate phosphorus reagent with an alpha-keto ester Compound (Kukhtin-Ramirez addition). A mechanistic rationale is offered for the chemoselectivity upon which the success of this nonmetal mediated C-C bond forming strategy is based.
Badajoz, Mercedes A.; Montant, Rosana S.; Cabaleiro, Mercedes C., Journal of the Chemical Society. Perkin Transactions 2 (2001), 1996, vol. 8, p. 1717 - 1722
作者:Badajoz, Mercedes A.、Montant, Rosana S.、Cabaleiro, Mercedes C.
DOI:——
日期:——
Ru-Catalyzed C–H Arylation of Acrylic Acids with Aryl Bromides
作者:Florian Belitz、Ann-Katrin Seitz、Jonas F. Goebel、Zhiyong Hu、Lukas J. Gooßen