An unusual base-mediated cyclization of ketimines derived from 2-(trifluoromethyl)aniline that involves the trifluoromethyl group: an expedient route to 2-arylquinolines
Chiral phosphine-phosphoramidite ligands for highly enantioselective hydrogenation of N-arylimines
作者:Qing Li、Chuan-Jin Hou、Xiao-Ning Liu、De-Zhi Huang、Yan-Jun Liu、Rui-Feng Yang、Xiang-Ping Hu
DOI:10.1039/c4ra16062b
日期:——
The asymmetrichydrogenation of N-arylimines with the chiral phosphine-phosphoramidite ligand, (Sc,Sa)-PEAPhos 2b, has been developed. The results revealed that the presence of the substituents on the 3,3′-positions of the binaphthyl backbone significantly improved the enantioselectivity. The utility of this methodology was demonstrated in the synthesis of the chiral fungicide (R)-metalaxyl.
[EN] QUINOLINES DERIVATIVES AS NOVEL ANTICANCER AGENTS<br/>[FR] DÉRIVÉS DE QUINOLINES EN TANT QUE NOUVEAUX AGENTS ANTICANCÉREUX
申请人:GENOSCIENCE PHARMA
公开号:WO2014147611A8
公开(公告)日:2014-11-20
Further studies on the cyclization of aromatic azomethines ortho-substituted with a trifluoromethyl group: synthesis of 2,4-di- or 2,3,4-trisubstituted quinolines
作者:Lucjan Strekowski、Steven E. Patterson、Lubomir Janda、Roman L. Wydra、Donald B. Harden、Malgorzata Lipowska、Marek T. Cegla
DOI:10.1021/jo00027a037
日期:1992.1
The scope and limitations of the novel synthetic route to quinolines (Strekowski et al. J. Org. Chem. 1990, 55, 4777) have been studied. A direct condensation of 2-(trifluoromethyl)aniline (1) with methyl aryl ketones, methyl heteroaryl ketones, ethyl aryl ketones, methyl vinyl ketones, 1-indanone, 1-tetralone, camphor, and cyclohexanone provides an easy access to the corresponding ketimines. An indirect one-pot preparation of dialkyl ketimines and C-alkyl-substituted amidines derived from 1, but inaccessible by the direct condensation method, is also presented. All these ketimines and amidines are cyclized in the presence of alkylamide, dialkylamide, or alkoxide bases to give a quinoline containing the base function at C-4. Analysis of byproducts of the base-mediated reactions provides strong support for the originally proposed mechanism of the quinoline formation.
Oxo/imido heterometathesis between N-sulfinylamines and ketones catalyzed by a silica-supported molybdenum imido complex
作者:Pavel A. Zhizhko、Anton A. Zhizhin、Dmitry N. Zarubin、Nikolai A. Ustynyuk
DOI:10.1016/j.mencom.2012.03.003
日期:2012.3
Grafting the molecular complex (MesN)(2)Mo(CH2CMe2Ph)(2) onto the surface of silica dramatically enhances its catalytic activity in the oxo/irnido heterometathesis reaction of N-sulfinylamines with carbonyl compounds.
Monomeric methyl metaphosphate: reactions with carbonyl groups