Patent ID: 6262300
Filing Date: 2001-07-17
Classification: C07C

Abstract:
A process for preparing chlorocarbonyl chlorides of the formula IR.sup.1 --CHCl--Y--COCl (I),whereR.sup.1 is hydrogen, or is C.sub.1 - to C.sub.20 -alkyl, C.sub.2 - to C.sub.12 -alkenyl, C.sub.2 - to C.sub.12 -alkynyl, each of which is unsubstituted or mono- to trisubstituted by C.sub.1 - to C.sub.4 -alkoxy, C.sub.2 - to C.sub.4 -acyl, C.sub.2 - to C.sub.4 -acyloxy, C.sub.2 - to C.sub.8 -dialkylamino, halogen, nitro and/or cyano, or is C.sub.3 - to C.sub.12 -cycloalkyl, C.sub.4 - to C.sub.12 -alkylcycloalkyl, C.sub.4 - to C.sub.12 -cycloalkylalkyl, heterocycloalkyl, C.sub.5 - to C.sub.20 -heterocycloalkylalkyl, C.sub.6 - to C.sub.14 -aryl, C.sub.7 - to C.sub.20 -arylalkyl or C.sub.7 - to C.sub.20 -alkylaryl, each of which is unsubstituted or mono- to trisubstituted by C.sub.1 - to C.sub.4 -alkyl, C.sub.1 - to C.sub.4 -alkoxy, C.sub.2 - to C.sub.4 -acyl, C.sub.2 - to C.sub.4 -acyloxy, C.sub.2 - to C.sub.8 -dialkylamino, halogen, nitro and/or cyano, andY is a saturated or mono- or polyolefinically unsaturated C.sub.2 -C.sub.8 -alkylene chain which may be interrupted by an ether, thioether, tertiary amino, keto, lactone, N-alkylsubstituted lactam or sulfone group and is unsubstituted or mono- to trisubstituted by C.sub.1 - to C.sub.4 -alkyl, C.sub.1 - to 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, halogen, nitro and cyano,by reacting the lactone of the formula II ##STR4##where R.sup.1 and Y are each as defined above, with phosgene in the presence of a urea compound of the formula IIIR.sup.2 R.sup.3 N--CX--NR.sup.4 R.sup.5 (III),where the radicals R.sup.2, R.sup.3, R.sup.4 and R.sup.5 may be identical or different and, independently of the others, each has the meanings given for R.sup.1 with the exception of hydrogen, or where one of the radicals R.sup.2 or R.sup.3 together with one of the radicals R.sup.4 or R.sup.5 are a hydrocarbon chain having 2 to 8 carbon atoms which may contain an ether, thioether, tertiary amino, keto, lactone, alkyl-substituted lactam, sulfone or diketo group and which is saturated or mono- or polyolefinically unsaturated and is unsubstituted or mono- to trisubstituted by 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 -ciialkylamino, halogen, nitro and cyano, or are a cycloalkylene group having 5 to 12 carbon atoms, a heterocycloalkylene group having 4 to 11 carbon atoms, an arylene group having 6 to 12 carbon atoms or a heteroarylene group having 3 to 11 carbon atoms, each of which is unsubstituted or mono- to trisubstituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, phenoxy, C.sub.2 -C.sub.4 -acyl, C.sub.2 -C.sub.4 -acyloxy, C.sub.2 -C.sub.8 -dialkylamino, halogen, nitro and/or cyano, and where X is an oxygen or sulfur atom, and/or a urea compound of the formula IV ##STR5##where X is as defined above, R.sup.6, R.sup.7, R8 and R.sup.9 may be identical or different and, independently of the others, each has the meanings given for R.sup.1, with the exception of hydrogen, and/ora compound of the formula (V), ##STR6##where X, R.sup.6 to R.sup.9 are each as defined above and Z.sup.1, Z.sup.2, which may be identical or different, are a methylene, ethylene or vinylene group which is unsubstituted or mono- to trisubstituted by 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, halogen, nitro and/or cyano.