Palladium-Catalyzed Intermolecular Ditrifluoromethoxylation of Unactivated Alkenes: CF<sub>3</sub>O-Palladation Initiated by Pd(IV)
作者:Chaohuang Chen、Yixin Luo、Liang Fu、Pinhong Chen、Yu Lan、Guosheng Liu
DOI:10.1021/jacs.7b11470
日期:2018.1.31
A novel palladium-catalyzedintermolecular ditrifluoromethoxylation of unactivatedalkenes has been developed, using a new electrophilic reagent, SelectfluorCN, as a strong oxidant, and AgOCF3 as a trifluoromethoxide source. Preliminary mechanistic studies revealed that the reaction was possibly initiated by Pd(IV) species, and an unusual cis-addition of CF3O-Pd(IV) into the double bond leads to the
Stereochemical Investigations of Samarium(II) Iodide-Promoted 5-Exo and 6-Exo Ketyl-Olefin Radical Cyclization Reactions
作者:Gary A. Molander、Jeffrey A. McKie
DOI:10.1021/jo00109a018
日期:1995.2
Samarium(II) iodide (SmI2)-promoted ketyl cyclizations of several substituted, unsaturated ketones, providing various cyclopentyl and cyclohexyl systems, have been investigated. The resulting experiments provide stereochemical insight into these reactions and in addition outline the synthetic potential of these 5-exe and 6-exo radical cyclization processes.
Highly selective hydrosilylation of equilibrating allylic azides
The Pt-catalyzed hydrosilylation of equilibrating allylic azides is reported. The reaction provides only one out of four possible hydrosilylation products in good yields and with very high chemoselectivity (alk-1-ene vs. alk-2-ene), regioselectivity (linear vs. branched), and excellent functional group tolerance.