A method to prepare beta-functionalized aliphatic esters
申请人:Cognis IP Management GmbH
公开号:EP2447245A1
公开(公告)日:2012-05-02
The invention pertains to a new route to prepare β-functionalized carboxylic acid esters in a one-pot reaction, by reacting an olefinic acid ester in the presence of a catalyst system, comprising a Rh(I)-complex, together with an aryl boron or a diamine as nucleophilic compounds, and under oxygen-free conditions and elevated temperatures.
Regioselective Synthesis of β-Aryl- and β-Amino-Substituted Aliphatic Esters by Rhodium-Catalyzed Tandem Double-Bond Migration/Conjugate Addition
作者:Dominik M. Ohlmann、Lukas J. Gooßen、Markus Dierker
DOI:10.1002/chem.201100654
日期:2011.8.16
unsaturated esters. Once the double‐bond is in conjugation with the carboxylate group, they also catalyze the Michael addition of carbon and nitrogen nucleophiles. In the presence of these catalysts, unsaturated carboxylates enter a dynamic equilibrium of positional and geometrical double‐bond isomers. The conjugated species are continuously removed through 1,4‐additions with formation of β‐amino esters or
Method To Prepare beta-Functionalized Aliphatic Esters
申请人:Goossen Lukas J.
公开号:US20130225852A1
公开(公告)日:2013-08-29
The invention pertains to a new route to prepare β-functionalized carboxylic acid esters in a one-pot reaction, by reacting an olefinic acid ester in the presence of a catalyst system, comprising a Rh(I)-complex, together with an aryl boron or a diamine as nucleophilic compounds, and under oxygen-free conditions and elevated temperatures.
[EN] A METHOD TO PREPARE BETA - FUNCTIONALIZED ALIPHATIC ESTERS<br/>[FR] PROCÉDÉ POUR PRÉPARER DES ESTERS ALIPHATIQUES BÊTA-FONCTIONNALISÉS
申请人:COGNIS IP MAN GMBH
公开号:WO2012055455A1
公开(公告)日:2012-05-03
The invention pertains to a new route to prepare β-functionalized carboxylic acid esters in a one-pot reaction, by reacting an olefinic acid ester in the presence of a catalyst system, comprising a Rh(I)-complex, together with an aryl boron or a diamine as nucleophilic compounds, and under oxygen-free conditions and elevated temperatures.
Facile synthesis of β-alkyl-substituted esters from α,β-unsaturated aldehydes
作者:Tsujiaki Hata、Masashi Nakajima、Mitsuo Sekine
DOI:10.1016/s0040-4039(01)86259-6
日期:1979.1
β-Alkyl-substituted carboxylates were synthesized in good yields from α,β-unsaturatedaldehydes by using the 1:1 carbonyl adducts with diethyl bis (trimethylsilyl) phosphite.