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Preparation of alpha,beta-Unsaturated Diazoketones Employing a Horner-Wadsworth-Emmons Reagent
(AMER CHEMICAL SOC, 2011)
A new method for the preparation of alpha,beta-unsaturated diazoketones from aldehydes and a Horner-Wadsworth- Emmons reagent is reported. The method was applied to the short synthesis of two substituted pyrrolidines.
Estudos visando a síntese estereosseletiva de derivados de piran-2-onas com marcantes atividades biológicas
(Universidade Federal de Minas GeraisBrasilICX - DEPARTAMENTO DE QUÍMICAPrograma de Pós-Graduação em QuímicaUFMG, 2021-04-30)
Lactones are cyclic esters that are found in the chemical structures of several natural products. It is a class of organic compounds of great importance due to its biological activities, their main exponent being the ...
Síntese de Penta-2,4-dienonitrilas e 2-Cianometileno-but-3-enoatos de Etila via Olefinação de Horner-Wadsworth-Emmons e sua Aplicação na Obtenção de 4-Trifluormetil-piridin-2(1H)-iminas Substituídas e 2H-Piran-2-onas Análogas .
(Universidade Federal de Santa MariaBRQuímicaUFSMPrograma de Pós-Graduação em Química, 2013-03-26)
This paper presents the Horner-Wadsworth-Emmons olefination applied
to preparing 22 new 5-alkoxy-3-trifluoromethyl-penta-2,4-dienenitriles (5), 5-
phenylthio-3-trifluoromethyl-penta-2,4-dienenitriles (6) and ethyl ...
An Improved Procedure for the Preparation of [Bis(2,2,2-trifluoroethyl)phosphono]acetic Acid
(GEORG THIEME VERLAG KG, 2010)
A different and improved procedure for the preparation of [bis(2,2,2-trifluoroethyl)phosphono]acetic acid in just one step from bis(2,2,2-trifluoroethyl)phosphonate is described. The protocol employs a Michaelis-Becker ...
Preparación de amidas quirales (Ε)-α,β-insaturadas mediante la reacción Horner-Wadsowort-Emmons
(2010-09-01)
La síntesis de amidas quirales α,β-insaturadas es un área de creciente interés debido a su importancia química y biológica, ya que muchos compuestos de este tipo presentan actividad biológica importante. Dada la importancia ...
Reações de bromoaminociclização enantiosseletivas visando a síntese de bases esfingóides
(Universidade Federal de São Paulo, 2022-03-04)
A porção aminoálcool é um constituinte estrutural presente em diversas moléculas, sejam elas de ocorrência natural ou não, que apresentam diversas atividades biológicas relevantes. Dentre elas, existem os aminoálcoois de ...
Total synthesis of (-)-indolizidine 167B via an unusual Wolff rearrangement from an alpha,beta-unsaturated diazoketone
(PERGAMON-ELSEVIER SCIENCE LTDOXFORD, 2012)
A concise synthesis of the (-)-indolizidine alkaloid 167B and two formal syntheses of (-)-indolizidine 209D and (-)-coniceine are described in just three steps from an alpha,beta-unsaturated diazoketone, via an unusual ...
Modular total syntheses of thymifodioic/incanic acids
(Elsevier, 2019-12)
The first total synthesis of the bioactive natural product 2,6-(E,E)-thymifodioic acid, also called incanic acid, and its stereoisomers is described. An unified, iterative and modular strategy was envisioned, achieving the ...