PROCESS FOR THE SYNTHESIS OF OMEGA-UNSATURATED NITRILE-ACID/ESTER IN WHICH TWO TYPES OF CROSS METATHESIS ARE ALTERNATED CONSECUTIVELY, SWING PROCESS
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United States of America Patent
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Issued Date -
Nov 26, 2015
app pub date -
Jan 7, 2013
filing date -
Jan 7, 2013
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Abandoned
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Abstract
A process for the synthesis of a monounsaturated nitrile-ester (acid) by cross metathesis starting from an unsaturated compound I including at least one trivalent nitrile, acid or ester functional group, wherein the process includes a stage in which two types of cross metathesis are alternated consecutively: — a first type of cross metathesis cm1 with an acrylic compound II chosen from acrylonitrile, acrylic acid or an acrylic ester, one of the compounds I or II including a nitrile functional group and the other of these compounds II or I including an acid or ester functional group, and—a second type of cross metathesis cm2 with a light C2 to C4 alkene compound III. Also, a process for the synthesis of an α,ω-amino ester (acid) obtained by a process including a stage in which the two types of cross metathesis defined above are alternated consecutively, followed by a hydrogenation stage.
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