Coupling of aromatic compounds in the presence of molecular oxygen, a mercuric oxyanion compound, and a group VIII metal or group VIII metal oxyanion compound
AssigneeMonsanto Company
InventorGeorge M. Intille
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Abstract
A catalytic process in which molecular oxygen is used to couple aromatic compounds to form a variety of polyaromatic compounds is disclosed. The process comprises reacting monoaromatic compounds in the presence of molecular oxygen and a catalyst system comprising a mercuric oxyanion compound, a Group VIII metal, or metal oxyanion compound and optionally a redox reagent consisting of a soluble salt of a multivalent metal having an oxidation potential greater than that of the Group VIII metal.
Claims30
A catalytic process for coupling aromatic compounds of the formula ##STR7## where n is an integer from 0 to 5 and each of the R groups is hydroxy, alkoxy, alkyl, aryloxy, aryl, acyl, alkanoate, carboxyl, carboxylic esters, halogen or nitro, and where two R groups, located on adjacent carbon atoms of the benzene ring, can be joined to form a carbocyclic or heterocyclic ring
- with molecular oxygen to produce coupled aromatic compounds comprising coupling said aromatic compounds with at least about 200 psi molecular oxygen in the presence of a mercuric oxyanion compound and a Group VIII metal or Group VIII metal oxyanion compound.
A process for coupling aromatic compounds of the formula ##STR8## where n is an integer from 0 to 1 and the R group is hydroxy, alkoxy, carboxyl, alkyl, aryl, aryloxy or halogen,
- comprising reacting said compounds with at least about 200 psi molecular oxygen in the presence of a catalyst system comprising a mercuric oxy-salt, a Group VIII metal oxy-salt and a redox agent.
A catalytic process for coupling aromatic compounds of the formula ##STR9## where n is an integer from 0 to 5 and each of the R groups is hydroxy, alkoxy, alkyl, aryloxy, aryl, acyl, alkanoate, carboxyl, carboxylic esters, halogen or nitro, and where two R groups, located on adjacent carbon atoms of the benzene ring, can be joined to form a carbocyclic ring
- with molecular oxygen to produce coupled aromatic compounds comprising coupling said aromatic compounds with at least about 200 psi molecular oxygen in the presence of a mercuric oxyanion compound and a Group VIII metal or Group VIII metal oxyanion compound.
Dependencies are inferred from the claim text.