Regioselective Single-Electron Tsuji–Trost Reaction of Allylic Alcohols: A Photoredox/Nickel Dual Catalytic Approach
作者:Zheng-Jun Wang、Shuai Zheng、Eugénie Romero、Jennifer K. Matsui、Gary A. Molander
DOI:10.1021/acs.orglett.9b02473
日期:2019.8.16
A radical-mediated functionalization of allyl alcohol derived partners with a variety of alkyl 1,4-dihydropyridines via photoredox/nickel dual catalysis is described. This transformation transpires with high linear and E-selectivity, avoiding the requirement of harsh conditions (e.g., strong base, elevated temperature). Additionally, using aryl sulfinate salts as radical precursors, allyl sulfones
Novel Nickel-Catalyzed Coupling Reaction of Allyl Ethers with Chlorosilanes, Alkyl Tosylates, or Alkyl Halides Promoted by Vinyl-Grignard Reagent Leading to Allylsilanes or Alkenes
method for a carbon-silicon or carbon-carbon bond forming reaction between allyl ethers and chlorosilanes, alkyl tosylates, or alkylhalides giving rise to allylsilanes or alkenes has been developed. This reaction proceeds efficiently at ambient temperature by the combined use of nickel catalysts and a vinyl-Grignard reagent. A possible reaction pathway involving the formation of allyl-Grignard reagents
Catalyst-controlled reverse selectivity in C–C bond formation: NHC-Cu-catalyzed α-selective allylic alkylation with organolithium reagents
作者:Stefano F. Pizzolato、Massimo Giannerini、Pieter H. Bos、Martín Fañanás-Mastral、Ben L. Feringa
DOI:10.1039/c5cc01521a
日期:——
An efficient and highly [small alpha]-selective copper-catalyzed allylic alkylation of allylic halides with organolithium reagents is presented. The use of N-heterocyclic carbenes as ligands is key to reverse the common [small alpha]-selectivity...
Hydroalkylation of terminal aryl alkynes with alkyl diacyl peroxides
作者:Yougui Li、Liang Ge、Bo Qian、Kaki Raveendra Babu、Hongli Bao
DOI:10.1016/j.tetlet.2016.11.020
日期:2016.12
A photo and nickel co-catalyzed hydroalkylation of terminal aryl alkynes enabled Z-preferred olefin synthesis has been developed under mild conditions. Alkyl diacyl peroxides were utilized as a new type of alkylation reagents and afforded Z-olefins as the major products in moderate to good yields.