Patent ID: 6046335
Filing Date: 2000-04-04
Classification: C07D,C09B

Abstract:
A compound of the formula (I) ##STR32## in which R.sub.1 and R.sub.2 are identical or different and are hydrogen, C.sub.1 -C.sub.6 -alkyl, C.sub.6 -C.sub.10 -aryl, (C.sub.6 -C.sub.10)-aryl-(C.sub.1 -C.sub.6)-alkyl or (C.sub.1 -C.sub.6)-alkyl-(C.sub.6 -C.sub.10)-aryl, optionally substituted by hydroxyl, C.sub.1 -C.sub.6 -alkoxy, C.sub.6 -C.sub.10 -aryloxy or halogen,with the proviso that R.sub.1 and R.sub.2 are not simultaneously hydrogen,R.sub.3 is a radical of the formula (II) or (III) ##STR33## in which Y is sulphur, oxygen or N--R.sub.4, in which R.sub.4 is hydrogen, C.sub.1 -C.sub.6 -alkyl, C.sub.6 -C.sub.10 -aryl, (C.sub.6 -C.sub.10)-aryl-(C.sub.1 -C.sub.6)-alkyl or (C.sub.1 -C.sub.6)-alkyl-(C.sub.6 -C.sub.10)-aryl, optionally substituted by hydroxyl, C.sub.1 -C.sub.6 -alkoxy, C.sub.6 -C.sub.10 -aryloxy or halogen; ##STR34## in which R.sub.5 is hydrogen, halogen, ##STR35## R.sub.6 --O-- or R.sub.6 --S--, in which R.sub.6 is C.sub.1 -C.sub.6 -alkyl, C.sub.6 -C.sub.10 -aryl, (C.sub.6 -C.sub.10)-aryl-(C.sub.1 -C.sub.6)-alkyl or (C.sub.1 -C.sub.6)-alkyl-(C.sub.6 -C.sub.10)-aryl, in which the alkyl and/or aryl radicals can be substituted by hydroxyl, C.sub.1 -C.sub.6 -alkoxy, C.sub.6 -C.sub.10 -aryloxy or halogen.