Patent ID: 6245954
Filing Date: 2001-06-12
Classification: B01J,C07B,C07C

Abstract:
A process for preparing alkyl, alkenyl and alkynyl chlorides from alcohols of the formula IV ##STR4##In which R.sup.9 and R.sup.10 are hydrogen, alkyl, alkenyl, alkynyl, alkoxy, aryloxy, hydroxyalkyl, hydroxyalkenyl or hydroxyalkynyl groups, by reaction with a chlorinating agent in the presence of a catalyst, wherein the catalyst is a urea compound of the formula (I)R.sup.1 R.sup.2 N--CX--NR.sup.3 R.sup.4 (I),in which the radicals R.sup.1, R.sup.2, R.sup.3 and R.sup.4 can be identical or different, are, independently of one another, optionally mono- to tri-C.sub.1 -C.sub.4 -alkoxy-, C.sub.2 -C.sub.4 -acyl-, C.sub.2 -C.sub.4 -acyloxy-, phenoxy-, C.sub.2 -C.sub.8 -dialkylamino-, halo-, nitro- and/or cyano-substituted C.sub.1 -C.sub.20 -alkyl, C.sub.2 -C.sub.12 -alkenyl, C.sub.2 -C.sub.12 -alkynyl or optionally mono- to tri-C.sub.1 -C.sub.4 -alkyl-, C.sub.1 -C.sub.4 -alkoxy-, C.sub.2 -C.sub.4 -acyl-, C.sub.2 -C.sub.4 -acyloxy-, C.sub.2 -C.sub.8 -dialkylamino-, halo-, nitro- and/or cyano-substituted C.sub.3 -C.sub.12 -cycloalkyl, C.sub.4 -C.sub.12 -alkylcycloalkyl, C.sub.4 -C.sub.12 -cycloalkylalkyl, heterocycloalkyl, C.sub.5 -C.sub.20 -heterocycloalkylalkyl, C.sub.6 -C.sub.14 -aryl, C.sub.7 -C.sub.20 -arylalkyl or C.sub.7 -C.sub.20 -alkylaryl, or in which one of the radicals R.sup.1 or R.sup.2 can be, together with one of the radicals R.sup.3 or R.sup.4, an optionally mono- to tri-C.sub.1 -C.sub.4 -alkyl-, C.sub.1 -C.sub.4 -alkoxy-, C.sub.2 -C.sub.4 -acyl-, C.sub.2 -C.sub.4 -acyloxy-, phenoxy-, C.sub.2 -C.sub.8 -dialkylamino-, halo-, nitro- and cyano-substituted C.sub.2 -C.sub.12 -alkylene chain which may be interrupted by an ether, thioether, tertiary amino, keto, lactone, N-alkyl-substituted lactam or sulfone moiety, and in which X is an oxygen or sulfur atom, and/or a urea compound of the general formula II ##STR5##in which X has the stated meaning, and R.sup.5, R.sup.6, R.sup.7 and R.sup.8 can be identical or different and, independently of one another, have the meaning given for R.sup.1 to R.sup.4and/ora compound of the general formula (III), ##STR6##in which X, R.sup.5 to R.sup.8 have the abovementioned meanings and Z.sup.l, Z.sup.2, which may be identical or different, are an optionally mono- to tri-C.sub.1 -C.sub.4 -alkyl-, C.sub.1 -C.sub.4 -alkoxy-, C.sub.2 -C.sub.4 -acyl-, C.sub.2 -C.sub.4 -acyloxy-, phenoxy-, C.sub.2 -C.sub.8 -dialkylamino-, halo-, nitro- and/or cyano-substituted methylene, ethylene or vinylene group.