A variety of primary and secondary amines give the conjugate reaction with β-nitroacrylates, via an anti-Michael addition, without any catalyst and/or solvent, allowing good yields of β-nitro-α-amino esters.
Addition of thionucleophiles to nitrocinnamates: approach toward synthesis of (alkyl/aryl)thio-amino acids
作者:Elzbieta Lewandowska
DOI:10.1080/17415993.2015.1107726
日期:2016.3.3
The addition of alkyl or aryl thiols to alpha-nitro or beta-nitrocinnamate in the presence of base provided Michael addition products. In the case of beta-nitro compounds reaction occurred via the formation of anti-Michael adducts. Selective nitro reduction of alpha-nitroadducts gives access to beta-thio-alpha-amino acid derivatives.
Nucleophilic addition to nitroacrylates: application towards the synthesis of 2,3-dehydroamino acids and 2,3-diamino acids
作者:Elzbieta Lewandowska、Kinga Wichlacz、Adam J. Sobczak
DOI:10.1016/j.tet.2009.11.029
日期:2010.1
The addition of the N-pronucleophiles to 2- or 3-nitro-2-alkenoates in the presence of base provided Michael addition products. In the case of 3-nitro compounds, reaction occurred via the formation of a-adducts and the subsequent elimination of nitrous acid to produce olefins with high Z stereoselectivity. 3-Phthalimido-2-nitrocinnamate adduct 8a was converted into 2,3-diamino ester 11a. (C) 2009 Elsevier Ltd. All rights reserved.
Reaction of ethyl α, β-unsaturated α- or β-nitrocarboxylates with sodium azide