Patent ID: 8859782
Filing Date: 2014-10-14
Classification: C07C,C07D

Abstract:
1. A process for the preparation of a compound of formula (I) in which W is hydrogen, X is methyl, Y and Z, independently of one another, are hydrogen, alkyl, alkenyl, alkynyl, halogen, cyano, optionally substituted cycloalkyl, alkoxy, haloalkyl, haloalkoxy or in each case optionally substituted aryl or hetaryl, A is hydrogen, is in each case optionally halogen-substituted alkyl, alkenyl, alkoxyalkyl, alkylthioalkyl, saturated or unsaturated, optionally substituted cycloalkyl, in which optionally at least one ring atom is replaced by a heteroatom, or aryl, arylalkyl or hetaryl each of which is optionally substituted by halogen, alkyl, haloalkyl, alkoxy, haloalkoxy, cyano or nitro, B is hydrogen, alkyl or alkoxyalkyl, or A and B, together with the carbon atom to which they are bonded are a saturated or unsaturated unsubstituted or substituted cycle optionally containing at least one heteroatom, G is hydrogen (a) or is one of the groups in which E is a metal ion or an ammonium ion, L is oxygen or sulphur, M is oxygen or sulphur, R R comprising reacting a compound of formula (X) in which A and B have the meanings given above, G is the groups a), b), c) and E given above, V is hydrogen or V is COOR where R with a compound of formula (XI) in which W, X, Y and Z have the meanings given above, with the exception that the halogen can now only be fluorine and chlorine, and Q is triflate, bromine or iodine, in the presence of a base, a palladium catalyst and a phosphine ligand of the formula (XII′) in which the radicals R′, R″ and R″′ independently of one another are C in a diluent.