et al., "Enantioselective Synthesis of .beta.-Amino Acids. 4. 1,2 Asymmetric Induction in the Alkylation of 1-Benzoyl-3,6(S)-dimethylperhydropyrimidin-4-one. Preparation of the Like and Unlike Stereoisomers of 2-Methyl-and 2-Benzyl-3(S)-aminobutonic Acid" J. Org. Chem. 1993, 58,...
Escalante, Jaime,Juaristi, et al.Enantioselective Synthesis ofβ-Amino Acids: High 1,2- Stereoinduction in the Preparation of Enantiopure 2(R)-Hydroxy-3(R)-N-benzoylamino-3- phenylpropionic Acid (Like Stereoisomer of Taxol’’s Side Chain). Tetrahedron Letters . 1995...
摘要: We report herein the three-step enantioselective synthesis of β-trifluoromethyl α-amino acids including trifluorovaline (TFV) using stereoselective hydrogenation with [((R)-trichickenfootphos)Rh(cod)]BF4 catalyst as the key step.关键词: amino acids, peptides diastereoselective syntheses, ...
Presents information pertaining to the novel enantioselective synthesis of the alpha,beta-dimethylcysteines and alpha-methylthreonines. Emerging of the inc... Shao,Hui,Rueter,... - 《Journal of Organic Chemistry》 被引量: 6发表: 1998年 Enantioselective Synthesis of Epoxy Amino Acids New functionali...
Enantioselective Synthesis of alpha-Hydroxy Amides and beta-Amino Alcohols from alpha-Keto Amidesamidesaminoalcoholsenantioselectivity Sekar,Govindasamy,Mamillapalli,... - 《Chemistry A European Journal》 被引量: 0发表: 2015年 Enantioselective Synthesis of alpha-Hydroxy Amides and beta-Amino Alcohols from...
Metal-catalysed reactions involving ammonia gas are plagued by ammonia’s strong Lewis basicity, which leads to poor chemoselectivity and enantioselectivity. Here we introduce a strategy for preparing chiral α-amino acids directly from ammonia. By the c
β-unsaturated amide has been hampered by the intrinsic low electrophilicity of the amide group. Here we show the catalytic asymmetric synthesis of enantioenriched tertiary boronic esters through hydroboration of β,β-disubstituted α,β-unsaturated amides. The Rh-catalyzed hydroboration occurs with ...
Attractively, the same behavior as chiral additives was also shown by family terms solid at room temperature, of faster and easier synthesis. The peak potential separation appears to regularly increase with inherently chiral salt concentration and to be modulated by the nature of the bulk ionic ...
Asymmetric catalytic Mannich reactions catalyzed by urea derivatives: enantioselective synthesis of beta-aryl-beta-amino acids. Forsee ChemInformin Full Text. AG Wenzel,EN Jacobsen - 《Cheminform》 被引量: 1508发表: 2003年 Enantioselective Synthesis of ??-Amino Nitriles from N -Benzhydryl Imines and...
Highly enantioselective synthesis of beta 来自 Semantic Scholar 喜欢 0 阅读量: 14 作者: TX Métro,J Cossy,DG Pardo 展开 摘要: Highly enantioselective rearrangement of beta-amino alcohols was realized by using a catalytic amount of trifluoroacetic anhydride. 展开 关键词: amino alcohols (...