PROCESS FOR PREPARING ALKYLIDENE SUBSTITUTED SUCCINIC ACID ESTERS

PROCESS FOR PREPARING ALKYLIDENE SUBSTITUTED SUCCINIC ACID ESTERS

A process for the preparation of alkylidene substituted succinates comprising a step (a) in which is carried out the reaction of a carbonilic compound, a succinic and a base in a reaction medium and a step (b) in which the alkylidene substituted product obtained in (a) is esterified, characterized i...

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Hauptverfasser: FACHINI, Marco, MORINI, Giampiero, GULEVICH, Yuri, PRINI, Giansiro, CRISTOFORI, Antonio
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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creator FACHINI, Marco
MORINI, Giampiero
GULEVICH, Yuri
PRINI, Giansiro
CRISTOFORI, Antonio
description A process for the preparation of alkylidene substituted succinates comprising a step (a) in which is carried out the reaction of a carbonilic compound, a succinic and a base in a reaction medium and a step (b) in which the alkylidene substituted product obtained in (a) is esterified, characterized in that the succinic ester is used in a molar amount substantially equal to, or lower than, the amount of compound carbonilic compound, (ii) the base is used in a molar amount substantially equal to the succinic ester and is selected from metal hydrides and metal and alkoxides, and (iii) the reaction medium comprises an aprotic liquid medium or a protic liquid medium having a Ka, measured in water, lower than that of iPrOH.
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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title PROCESS FOR PREPARING ALKYLIDENE SUBSTITUTED SUCCINIC ACID ESTERS
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