the enaminones 4a–4e by the following two routes: (A): Acylation of the enamines, 2, derived from 1 and secondary amines (pyrrolidine, morpholine and piperidine) by ethyl chloroformate, and (B): Condensation of 1 with diethyl oxalate, giving the β-ketoesters 3, followed by reaction with the secondary amines. Ethyl 2(-1-pyrrolidinyl)-1-cyclopentene-1-carboxylate, 4f, and methyl 3-(1-pyrrolidinyl)-2-butenoate
Trifluoromethylation of enamines under acidic conditions
作者:Roman T. Gritsenko、Vitalij V. Levin、Alexander D. Dilman、Pavel A. Belyakov、Marina I. Struchkova、Vladimir A. Tartakovsky
DOI:10.1016/j.tetlet.2009.03.187
日期:2009.6
A method for the trifluoromethylation of enamines using Me3SiCF3 leading to α-CF3-substituted amines is described. The reaction is promoted by hydrofluoric acid generated from KHF2 and either trifluoroacetic or triflic acid, and involves protonation of the enamine followed by transfer of the CF3-carbanion from the silicon reagent to the cationic electrophile.
Bakhtiar, Cuross; Smith, Edward H., Journal of the Chemical Society. Perkin transactions I, 1994, # 3, p. 239 - 244
作者:Bakhtiar, Cuross、Smith, Edward H.
DOI:——
日期:——
Gravel, Denis; Labelle, Marc, Canadian Journal of Chemistry, 1985, vol. 63, p. 1874 - 1883
作者:Gravel, Denis、Labelle, Marc
DOI:——
日期:——
Aromatization of enamines using the TiCl4/Et3N reagent system
作者:Gadthula Srinivas、Mariappan Periasamy
DOI:10.1016/s0040-4039(02)00380-5
日期:2002.4
Aromatization of enamines to the corresponding aniline derivatives using the TiCl4 Et3N reagent system is described. (C) 2002 Elsevier Science Ltd. All rights reserved.