A highly efficient method to access axially chiral anilides through asymmetricallylicalkylationreaction with achiral Morita-Baylis-Hillman carbonates by using a biscinchona alkaloid catalyst was reported. Through the atroposelective approach, a broad range of axially chiral anilide products with different acyl groups, such as substituted phenyl, naphthyl, alkyl, enyl, styryl, and benzyl, were generated
The Iodine-mediated oxidative intramolecular amination of anilines via cleavage of unactivated (sp3)C–H and N–H bonds for the production of indolines is described. This transition-metal-freeapproach provides a straightforward strategy for producing (sp3)C–N bonds for use in the preferential functionalization of unactivated (sp3)C–H bonds over (sp2)C–H bonds. The reaction could be performed on a gram
Asymmetric synthesis of axially chiral anilides by Pd-catalyzed allylic substitutions with P/olefin ligands
作者:Yilin Liu、Xiangqing Feng、Haifeng Du
DOI:10.1039/c4ob01087f
日期:——
synthesis of axiallychiral anilides is therefore of great interest in synthetic and pharmaceutical chemistry. In this paper, a palladium-catalyzed asymmetric allylic substitution of ortho-substituted anilides using phosphorus amidite–olefin ligands was successfully achieved to afford a variety of axiallychiral anilides in high yields with up to 84% ee. The absolute configurations of chiral anilides were
Phase-Transfer-Catalyzed Asymmetric Synthesis of Axially Chiral Anilides
作者:Kun Liu、Xiangfei Wu、S. B. Jennifer Kan、Seiji Shirakawa、Keiji Maruoka
DOI:10.1002/asia.201301036
日期:2013.12
Catalytic asymmetricsynthesis of axiallychiral o‐iodoanilides and o‐tert‐butylanilides as useful chiral building blocks was achieved by means of binaphthyl‐modified chiral quaternary ammonium‐salt‐catalyzed N‐alkylations under phase‐transfer conditions. The synthetic utility of axiallychiral products was demonstrated in various transformations. For example, axiallychiral N‐allyl‐o‐iodoanilide was
N-Allylation of anilides with chiral palladium catalysts: the first catalytic asymmetric synthesis of axially chiral anilides
作者:Jun Terauchi、Dennis P. Curran
DOI:10.1016/s0957-4166(03)00041-7
日期:2003.3
The first catalytic asymmetric synthesis of axiallychiralanilides has been carried out under palladium-catalyzed allylation reaction conditions with chiral phosphine ligands. Allylation of anilides bearing an orthotert-butyl group with a palladium catalyst and (S)-BINAP as a chiral ligand gave axiallychiralanilides in about 50% ee.