Synthesis of cucurbitine derivatives: facile straightforward approach to methyl 3-amino-4-aryl-1-methylpyrrolydine-3-carboxylates
作者:Daniel Blanco-Ania、Pedro H.H. Hermkens、Leo A.J.M. Sliedregt、Hans W. Scheeren、Floris P.J.T. Rutjes
DOI:10.1016/j.tet.2009.04.059
日期:2009.7
A general three- or four-step synthesis of cis- and trans-substituted cucurbitine (3-aminopyrrolidine-3-carboxylic acid) derivatives from methyl 2-nitroacetate is reported. The first step utilizes a Knoevenagel condensation with five different aromatic imines or their corresponding aldehydes to form (Z/E)-mixtures of α-nitro acrylates. The second step gives rise to the pyrrolidine-core structures of
The [1 + 4] cycloaddition of isocyanides with 1-aryl-2-nitro-1-propenes. Methyl 2-nitro-3-arylpropenoates and methyl 2-nitro-2,4-pentadienoates. Synthesis of 1-hydroxyindoles and 1-hydroxypyrroles
作者:Andre Foucaud、Claudia Razorilalana-Rabearivony、Emile Loukakou、Herve Person
DOI:10.1021/jo00169a004
日期:1983.10
Rosenberg, Michal; Balaz, Stefan; Sturdik, Ernest, Collection of Czechoslovak Chemical Communications, 1987, vol. 52, # 2, p. 425 - 430
作者:Rosenberg, Michal、Balaz, Stefan、Sturdik, Ernest、Kuchar, Anton
DOI:——
日期:——
Reactions of fluorinated silanes with 2-nitrocinnamates
作者:Artem A. Zemtsov、Vitalij V. Levin、Alexander D. Dilman、Marina I. Struchkova、Vladimir A. Tartakovsky
DOI:10.1016/j.jfluchem.2011.03.015
日期:2011.6
The interaction of 2-nitrocinnamates with silicon reagents Me3SiRf (R-f = CF3, C2F5, and C6F5) promoted either by sodium acetate in DMF or by tetrabutylammonium acetate in dichloromethane has been described. The reactions proceed as conjugate addition of fluorinated carbanion at the C = C bond and afford 3-aryl-2-nitrobutanoates bearing a fluorinated substituent in good yields as diastereomeric mixtures in ratio from 1:1 to 1.6:1. (C) 2011 Elsevier B.V. All rights reserved.