Carbamoyl Fluoride-Enabled Enantioselective Ni-Catalyzed Carbocarbamoylation of Unactivated Alkenes
作者:Yue Li、Feng-Ping Zhang、Rong-Hua Wang、Shao-Long Qi、Yu-Xin Luan、Mengchun Ye
DOI:10.1021/jacs.0c09949
日期:2020.11.25
A carbamoyl fluoride-enabled enantioselective Ni-catalyzed carbocarbamoylation of unactivatedalkenes was developed, providing a broad range of chiral γ-lactams bearing an all-carbon quaternary center in 45-96% yield and 38-97% ee.
开发了一种氨基甲酰氟启用的对映选择性 Ni 催化的未活化烯烃的氨基甲酰化,以 45-96% 的产率和 38-97% 的 ee 提供了广泛的手性 γ-内酰胺,带有全碳季中心。
Reductive hydrobenzylation of terminal alkynes <i>via</i> photoredox and nickel dual catalysis
A photoredox/nickeldual catalyzed reductive hydrobenzylation of alkynes and benzyl chlorides by employing alkyl amines as a stoichiometric reductant is described. This synergistic protocol proceeds via Markovnikov-selective migratory insertion of an alkyne into nickel hydride, followed by cross-coupling with benzyl chloride, providing facile access to important 1,1-disubstituted olefins. This reaction
Palladium-Catalyzed Enantioselective Redox-Relay Heck Arylation of 1,1-Disubstituted Homoallylic Alcohols
作者:Zhi-Min Chen、Margaret J. Hilton、Matthew S. Sigman
DOI:10.1021/jacs.6b06994
日期:2016.9.14
An enantioselective redox-relay oxidative Heck arylation of 1,1-disubstituted alkenes to construct β-stereocenters was developed using a new pyridyl-oxazoline ligand. Various 1,2-diaryl carbonyl compounds were readily obtained in moderate yield and good to excellent enantioselectivity. Additionally, analysis of the reaction outcomes using multidimensional correlations revealed that enantioselectivity
Carbometalation: Cobalt salts catalyze benzylzincation of alkynes to afford benzylated multisubstituted alkenes with high regio‐ and stereoselectivity. The scope of the reaction is wide enough to apply unfunctionalized alkynes as well as arylacetylenes. The reaction offers a new route to the regio‐ and stereoselective synthesis of an estrogen receptor antagonist (see scheme).
Regioselective Fluoroalkylphosphorylation of Unactivated Alkenes by Radical‐Mediated Alkoxyphosphine Rearrangement**
作者:Dong‐Tai Xie、Hong‐Lei Chen、Dian Wei、Bang‐Yi Wei、Zheng‐Hu Li、Jian‐Wu Zhang、Wei Yu、Bing Han
DOI:10.1002/anie.202203398
日期:2022.7.25
A regioselective radical fluoroalkylphosphorylation of unactivated alkenes is developed by a one-pot reaction of (bis)homoallylic alcohols, phosphine chlorides, and fluoroalkyl iodides under compact fluorescence light (CFL) irradiation. This protocol employs a novel radical rearrangement of alkoxyphosphine to achieve the unusual installing of a phosphoryl in the inner side of the terminal olefins by