| 摘要 |
A process for oxidizing a composition comprising contacting an alkylbenzene of the general formula (I):;
where R1 and R2 each independently represents hydrogen or an alkyl group having from 1 to 4 carbon atoms, wherein R1 and R2 may be joined to form a cyclic group having from 4 to 10 carbon atoms, the cyclic group being optionally substituted, and R3 represents hydrogen, one or more alkyl groups having from 1 to 4 carbon atoms or a cyclohexyl group; and (ii) about 0.05 wt % to about 5 wt % of phenol, with oxygen in the presence of a catalyst containing a cyclic imide having the general formula (II):
;
wherein X represents an oxygen atom, a hydroxyl group, or an acyloxy group under conditions effective to convert at least a portion of the alkylbenzene to a hydroperoxide. |
| 主权项 |
1. A process for oxidizing an alkylbenzene, the process comprising:
(a) supplying a composition comprising (i) an alkylbenzene of the general formula (I):where R1 and R2 each independently represents hydrogen or an alkyl group having from 1 to 4 carbon atoms, wherein R1 and R2 may be joined to form a cyclic group having from 4 to 10 carbon atoms, the cyclic group being optionally substituted, and R3 represents hydrogen, one or more alkyl groups having from 1 to 4 carbon atoms or a cyclohexyl group and (ii) about 0.05 wt % to about 5.0 wt % of phenol, the wt % based upon total weight of the composition; and
(b) contacting the composition with oxygen in the presence of a catalyst containing a cyclic imide having the general formula (III):wherein X represents an oxygen atom, a hydroxyl group, or an acyloxy group, and R4 and R5 are the same or different and each represents a hydrogen atom, a halogen atom, an alkyl group, an aryl group, a cycloalkyl group, a hydroxyl group, an alkoxy group, a carboxyl group, an alkoxycarbonyl group, or an acyl group, provided that R4 and R5 may be bound together to form a double bond or an aromatic- or non-aromatic ring,
and wherein the contacting step (b) is conducted under conditions effective to convert at least a portion of the alkylbenzene to an alkylbenzene hydroperoxide. |
