Gogte, V. N.; Natu, A. A.; Pore, V. S., Synthetic Communications, 1987, vol. 17, # 12, p. 1421 - 1430
作者:Gogte, V. N.、Natu, A. A.、Pore, V. S.
DOI:——
日期:——
Synthesis of unnatural α-amino esters using ethyl nitroacetate and condensation or cycloaddition reactions
作者:Glwadys Gagnot、Vincent Hervin、Eloi P Coutant、Sarah Desmons、Racha Baatallah、Victor Monnot、Yves L Janin
DOI:10.3762/bjoc.14.263
日期:——
We report here on the use of ethyl nitroacetate as a glycine template to produce α-amino esters. This started with a study of its condensation with various arylacetals to give ethyl 3-aryl-2-nitroacrylates followed by a reduction (NaBH4 and then zinc/HCl) into α-amino esters. The scope of this method was explored as well as an alternative with arylacylals instead. We also focused on various [2 + 3]
Transforming Natural Amino Acids into α-Alkyl-Substituted Amino Acids with the Help of the HOF·CH<sub>3</sub>CN Complex
作者:Tal Harel、Shlomo Rozen
DOI:10.1021/jo0709450
日期:2007.8.1
α-Alkyl amino acids can be efficiently prepared in high yields from the respective amino acids themselves. The key step is the oxidation of the amine function to create the corresponding α-nitro acid in a fast and very high yield reaction followed by phase-transfer alkylation and finally reduction to the desired α-alkyl amino acid. Several such acids containing aromatic rings or additional carboxylic