초록 ▼

There is disclosed an improved process for oxidizing cyclohexane to produce a reaction mixture containing cyclohexyl hydroperoxide and decomposing the cyclohexyl hydroperoxide to form a mixture containing cyclohexanone and cyclohexanol comprising using in the oxidation step and/or the decomposition

There is disclosed an improved process for oxidizing cyclohexane to produce a reaction mixture containing cyclohexyl hydroperoxide and decomposing the cyclohexyl hydroperoxide to form a mixture containing cyclohexanone and cyclohexanol comprising using in the oxidation step and/or the decomposition step as a catalyst a transitional metal complex of certain 1,3-bis(pyridylimino)isoindolines.

대표청구항 ▼

In a process for producing a mixture containing cyclohexanol and cyclohexanone wherein cyclohexane is oxidized in air to provide a reaction mixture containing cyclohexyl hydroperoxide and the cyclohexyl hydroperoxide is decomposed in the presence of starting cyclohexane to provide a mixture containi

In a process for producing a mixture containing cyclohexanol and cyclohexanone wherein cyclohexane is oxidized in air to provide a reaction mixture containing cyclohexyl hydroperoxide and the cyclohexyl hydroperoxide is decomposed in the presence of starting cyclohexane to provide a mixture containing cyclohexanol and cyclohexanone, the improvement comprising (1) conducting the oxidation step by contacting cyclohexane with air at a temperature of from about 120°-160°C. in the presence of a catalytic amount of catalyst composition consisting essentially of at least one transition metal complex having the structural formula [Figure] wherein the primary ligand is the entity in brackets; M is Co, Mn or Fe; R1, R2, R3, R4, R5, and R6 are independently hydrogen, lower alkyl, lower alkoxyalkyl, phenyl, benzyl, or phenethyl or any two adjacent members of R1 through R6 are jointly four CH entities of a benzene ring fused to the pyridine ring; R7, R8, R9 and R10 are independently hydrogen, lower alkyl or lower alkoxyalkyl or any two adjacent members of R7 through R10 can jointly be four CH entities of a benzene ring fused to the benzene ring of the isoindoline moiety; X is an ancillary anionic ligand; n is 1 or 2; p is 0, 1 or 2, provided that n+p is 2 or 3; with the proviso that when there are two primary ligands the values of R1 through R10 can be different for each ligand and when there are two ancillary anionic ligands the value of X can be different; and/or (2) conducting the decomposition step by contacting a reaction mixture containing cyclohexane and from about 0.1 to about 10% by weight of cyclohexyl hydroperoxide with a catalytic amount of said catalyst composition at a temperature of from about 80°-160°C., optionally in the presence of molecular oxygen.