Juaristi et al., " Enantioselective Synthesis of 尾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)-aminobutanoic Acid ", J. Org. Chem., 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...
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...
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, ...
Synthesis of enantiomerically enriched alpha-hydroxy amides and beta-amino alcohols has been accomplished by enantioselective reduction of alpha-keto amide... CSG Mamillapalli - 《Chemistry A European Journal》 被引量: 0发表: 2015年 Synthesis of N-acyl α-amino amides and the study of chiral acyc...
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 ...
the melting point can be lowered below room temperature; thus, two ICILs have been very recently obtained as enantiopure antipodes, starting from bicollidine, a very convenient scaffold on account of its low-cost synthesis and possibility to be separated into enantiomers by fractional crystallization,...
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...
Enantioselective Synthesis of a,b-Disubstituted-b-amino Acids Ruthenium-eta-arene complexes attached to the secondary face of beta-cyclodextrin catalyze the enantioselective redn. (ee up to 98%) of aliph. and arom. ke... MP Sibi,N Prabagaran,SG Ghorpade,... 被引量: 7发表: 2003年 加载...