PROCESS FOR PREPARING ESTERS OF 2-FORMYL-3,3-DIMETHYL-CYCLOPROPANE-1-CARBOXYLIC ACID

PROCESS FOR PREPARING ESTERS OF 2-FORMYL-3,3-DIMETHYL-CYCLOPROPANE-1-CARBOXYLIC ACID

1. Process for the preparation of 2-formyl-3,3-dimethyl-cyclopropane-1-carboxylic acid esters of the formula I see diagramm : EP0022208,P4,F1 in which R represents alkyl or optionally substituted aralkyl, characterized in that 2-cyano-3,3-dimethyl-cyclopropane-1-carboxylic acid esters of the formula...

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Bibliographische Detailangaben
Hauptverfasser: MAUER,FRITZ,DE, PRIESNITZ,UWE,DE, RIEBEL,HANS-JO,DE
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:1. Process for the preparation of 2-formyl-3,3-dimethyl-cyclopropane-1-carboxylic acid esters of the formula I see diagramm : EP0022208,P4,F1 in which R represents alkyl or optionally substituted aralkyl, characterized in that 2-cyano-3,3-dimethyl-cyclopropane-1-carboxylic acid esters of the formula II see diagramm : EP0022208,P4,F2 in which R has the meaning indicated above, are reacted with formic acid in the presence of catalysts which are used for catalytic hydrogenation, at temperature between 0 and 1508C.