Patent ID: 6248913
Filing Date: 2001-06-19
Classification: B01J,C07D

Abstract:
A catalyst for the selective oxidation of olefins in the presence of air or oxygen, comprising a compound of the formula (1)Mo.sub.x O.sub.y (L).sub.z (1)wherex is 1, 2 or 3,y is an integer from 0 to 2x+1,z is 1,wherein the ligand L is a compound of the formula (2) or (3) ##STR11##wheren is 0 or 1,X is a nitrogen, oxygen or sulfur atom,Y is hydrogen, C.sub.1-C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkoxy, F, Cl, Br, I, COOCH.sub.3, C.sub.6 -C.sub.14 -aryl or C.sub.3 -C.sub.8 -cycloalkyl,R.sup.3 and R.sup.4 form a ring containing from 4 to 8 carbon atoms onto which one or two aromatic rings may be fused,R.sup.1 and R.sup.2 are hydrogen, branched or straight-chain C.sub.1 -C.sub.12 -alkyl or branched or straight-chain C.sub.1 -C.sub.12 -haloalkyl which substitute the ring formed by R.sup.3 and R.sup.4 and/or the rings fused onto this ring,or the ligand L is a compound of the formula (4) or (5) ##STR12##where R is hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkoxy, COOCH.sub.3, carbonyl oxygen, C.sub.6 -C.sub.14 -aryl or C.sub.3 -C.sub.8 -cycloalkyl and n is 1 or 2 and m is from 1 to 6.