92303-74-7Relevant academic research and scientific papers
CONVERSION OF α-AMINONITRILES TO AMIDES BY A NEW PINNER TYPE REACTION
Lee, Young Bok,Goo, Yang Mo,Lee, Youn Young,Lee, Jae Keun
, p. 1169 - 1170 (1990)
α-Aminonitriles were converted exclusively to the amides by 2-mercaptoethanol in anhydrous THF at -78 deg C by bubbling dry HCl gas.
Enzymatic synthesis of chiral phenylalanine derivatives by a dynamic kinetic resolution of corresponding amide and nitrile substrates with a multi-enzyme system
Yasukawa, Kazuyuki,Asano, Yasuhisa
supporting information, p. 3327 - 3332 (2013/01/15)
Mutant α-amino-ε-caprolactam (ACL) racemase (L19V/L78T) from Achromobacter obae with improved substrate specificity toward phenylalaninamide was obtained by directed evolution. The mutant ACL racemase and thermostable mutant D-amino acid amidase (DaaA) from Ochrobactrum anthropi SV3 co-expressed in Escherichia coli (pACLmut/pDBFB40) were utilized for synthesis of (R)-phenylalanine and non-natural (R)-phenylalanine derivatives (4-OH, 4-F, 3-F, and 2-F-Phe) by dynamic kinetic resolution (DKR). Recombinant E. coli with DaaA and mutant ACL racemase genes catalyzed the synthesis of (R)-phenylalanine with 84% yield and 99% ee from (RS)-phenylalaninamide (400 mM) in 22 h. (R)-Tyrosine and 4-fluoro-(R)-phenylalanine were also efficiently synthesized from the corresponding amide compounds. We also co-expresed two genes encoding mutant ACL racemase and L-amino acid amidase from Brevundimonas diminuta in E. coli and performed the efficient production of various (S)-phenylalanine derivatives. Moreover, 2-aminophenylpropionitrile was converted to (R)-phenylalanine by DKR using a combination of the non-stereoselective nitrile hydratase from recombinamt E. coli and mutant ACL racemase and DaaA from E. coli encoding mutant ACL racemase and DaaA genes. Copyright
Hydrolysis of various nitrile compounds to the amides by catalysis of 2-mercaptoethanol in a phosphate buffer
Lee,Goo,Lee,Lee
, p. 7439 - 7440 (2007/10/02)
α-Aminonitriles, 4-nitrobenzonitrile and 3,5-dinitrobenzonitrile were hydrolyzed exclusively to amides efficiently when they were stirred with 2-mercaptoethanol in a phosphate buffer (pH 7.0, 50 mM).
