Patent ID: 6130350
Filing Date: 2000-10-10
Classification: C07C

Abstract:
A process for preparing cyclopropanecarboxylic acid derivatives of the ##STR4## wherein R represents OR.sup.1 or NR.sup.2 R.sup.3, where R.sup.1, R.sup.2 and R.sup.3 independently of one another each represent a linear or branched C.sub.1 -C.sub.4 -alkyl radical, by reacting halogenocyclopropanecarboxylic acid derivatives of the formula ##STR5## wherein R has the meaning specified under formula (I) andX represents chlorine, bromine or iodine with addition of a metal and a base, which comprises adding the base during the reaction and working in a protic solvent, wherein the process is carried out without addition of hydrogen at atmospheric pressure and with addition of 320 to 500 mol % of an amine, based on the compound of the formula (II), of the formula (III), ##STR6## wherein R.sup.4 to R.sup.11 independently of one another represent hydrogen or a linear C.sub.1 -C.sub.4 alkyl group or a branched C.sub.1 -C.sub.4 alkyl group.