Process for oxidizing alkylaromatic compounds

Details Process for oxidizing alkylaromatic compounds Process for oxidizing alkylaromatic compounds

2011-07-26

2011-07-26

Witherspoon, Sikarl (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C568S568000, C568S798000

Reexamination Certificate

active

07985883

ABSTRACT:
In a process for producing hydroperoxides, an alkylaromatic compound of general formula (I):in which R1and R2each independently represents an alkyl group having from 1 to 4 carbon atoms, provided that R1and R2may be joined to form a cyclic group having from 4 to 10 carbon atoms, said cyclic group being optionally substituted, and R3represents hydrogen, one or more alkyl groups having from 1 to 4 carbon atoms or a cyclohexyl group, with oxygen in the presence of a catalyst comprising a manganese oxide molecular sieve to produce a hydroperoxide of general formula (II):in which R1, R2and R3have the same meaning as in formula (I).The hydroperoxide of formula (II) may then be converted to a phenol and an aldehyde or a ketone of the general formula R1COCH2R2(III), in which R1and R2have the same meaning as in formula (I). In the case where the ketone is cyclohexanone, this may then be dehydrogenated to produce further phenol.

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