71849-99-5Relevant academic research and scientific papers
Synthesis of 2-Aminocarboxylic Acids on the Basis of Metalated Lithium Acylates
Zorin,Lenkova,Khachaturyan,Zorin
, p. 1590 - 1594 (2018/11/10)
2-Aminocarboxylic acids have been synthesized through the reaction of lithium acylate α-carbanions with alkyl nitrites to form α-hydroxyiminoacylates, followed by reduction of the latter with tin chloride. The reactions of lithium acylate α-carbanions, ge
Use of the chiral pool - Practical asymmetric organocatalytic strecker reaction with quinine
Reingruber, Ruediger,Baumann, Thomas,Dahmen, Stefan,Braese, Stefan
supporting information; experimental part, p. 1019 - 1024 (2009/12/05)
An efficient, organocatalytic enantiose-lective synthesis of N-arylsulfonyl α-amino nitriles from the corresponding α-amido sulfones has been developed. This quinine-catalyzed Strecker reaction provides the corresponding cyanated products in good yields a
A convenient synthesis of N-boc-protected α-aminonitriles from α-amidosulfones
Banphavichit, Vorawit,Chaleawlertumpon, Saowaluk,Bhanthumnavin, Worawan,Vilaivan, Tirayut
, p. 3147 - 3160 (2007/10/03)
Synthesis of N-Boc-protected α-aminonitriles starting from N-Boc-protected α-aminosulfones is described. Treatment of the sulfone with two equivalents of potassium cyanide in 2-propanol or dichloromethane- H2O under phase transfer condition affords crystalline N-Boc-protected α-aminonitriles in good yield. Hydrolysis of the aminonitriles provides a convenient access to racemic α-amino acids.
Method for the synthesis of amines and amino acids with organoboron derivatives
-
, (2008/06/13)
Amines and amino acids are prepared by reacting an amine, a carbonyl derivative, and an organoboron compound under mild conditions.
A new synthesis of α-arylglycines from aryl boronic acids
Petasis, Nicos A.,Goodman, Andrew,Zavialov, Ilia A.
, p. 16463 - 16470 (2007/10/03)
Aryl and heteroaryl boronic acids react with the adducts of amines and glyoxylic acid to give the corresponding α-aryl and α-heteroaryl glycine derivatives. Several examples of this reaction with m- and p- substituted aryl boronic acids as well as 3-thienyl, 2-thienyl, 2- furyl, 2-benzo[b]furyl and 2-benzo[b]thienyl boronic acids are described.
Asymmetric amino acid synthesis: Mitsunobu reaction on chiral cyanohydrins
Decicco, Carl P.,Grover, Paul
, p. 529 - 530 (2007/10/03)
BOC(SES)NH was reacted with chiral cyanohydrins using the Mitsunobu reaction to give good yields of protected α-aminonitriles, which were converted to chiral amino and imino acids.
INDIRECT ELECTROCHEMICAL α-METHOXYLATION OF N-ACYL AND N-CARBOALKOXY α-AMINO ACID ESTERS AND APPLICATION AS CATIONIC GLYCINE EQUIVALENTS
Ginzel, Klaus-Dieter,Brungs, Peter,Steckhan, Eberhard
, p. 1691 - 1702 (2007/10/02)
Indirect electrochemical methoxylation of N-acyl and N-carboalkoxy α-amino acid esters in α-position to nitrogen is possible, if chloride is used as mediator.The course of the reaction depends upon the protecting group as well as upon the amino acid side-chain.Increased electron withdrawing effects of the protecting group are accelerating the reaction.On the other hand aliphatic side-chains are diminishing the reactivity.High chloride ion concentrations improve the current yields surprisingly strong.
Synthesis of α-Amino Acids by Reaction of t-Butyl N-(t-Butoxycarbonyl)iminoacetate With C-Nucleophiles
Muenster, Peter,Steglich, Wolfgang
, p. 223 - 225 (2007/10/02)
The reaction of t-butyl N-(t-butoxycarbonyl)iminoacetate with Grignard reagents or enamines yields N-(t-butoxycarbonyl)amino acid t-butyl esters which can be easily converted into the free amino acids by treatment with acids.
A New α-Amino Acid Synthesis via an Acetimidate Rearrangement
Takano, Seiichi,Akiyama, Masashi,Ogasawara, Kunio
, p. 770 - 771 (2007/10/02)
A new efficient synthesis of α-amino acids from allyl alcohol derivatives via an acetimidate rearrangement has been developed.
Ueber die Enantiomerentrennung durch Verteilung zwischen fluessigen Phasen 3. Mitteilung. Selektivitaet der lipophilen Weinsaeureester fuer chirale Ammonium-Salze verschiedener Konstitution und Konfiguration
Prelog, Vladimir,Mutak, Stjepan,Kovacevic, Krunoslav
, p. 2279 - 2284 (2007/10/02)
Several methods are described which allow determination on a small scale of the enantiomer distribution constant Q, and the affinity coefficient P, which characterize the enantioselectivity and the affinity of a lipophilic phase for ammonium salts of different constitution and configuration.The influence of concentration of the tartaric acid ester, temperature, concentration and type of the lipophilic anion on Q and P was investigated to find out favourable experimental conditions for resolutions of racemates by iterative processes, e.g. partition chromatography.The relation ship between Q and the configuration of aminoalcohols 1-12 was explored and the observed regularities are pointed out.In addition it was found that lipophilic tartaric acid esters are enantioselective to salts of threo-1,2-diphenyl-1,2-ethanediamine 13, and to phenylglycine and its derivatives 14-16.
