US 6,476,276 B2Granted

Process for preparation of hydroperoxides

AssigneeMitsui Chemicals, Inc.

InventorsShigekazu Matsui, Hiroshi Kuroda, Nobuya Hirokane, Haruyuki Makio, Toshihiro Takai, Koji Kato, Terunori Fujita, Makoto Kamimura

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Abstract

A process for preparing hydroperoxides which comprises oxidizing hydrocarbon by a gas containing oxygen in the presence of a specific compound and converting them selectively to corresponding hydroperoxides. The specific compound is the compound that can capture radicals. The preferable example may be a compound selected from radicals of oxygen, nitrogen, phosphorus, sulfur, carbon or silicon or a compound that forms radicals of these in the reaction system. The present invention can be applied to oxidation of hydrocarbons including arylalkylhydrocarbons such as cumene, m-diisopropylbenzene, p-diisopropylbenzene, 1,3,5-triisopropylbenzene, isopropylnaphthalene, diisopropylnaphthalene, isopropylbiphenyl, diisopropylbiphenyl, etc.

Claims10

Dependent claims

A process for preparing arylalkyl hydroperoxides, comprising:

oxidizing an arylalkyl hydrocarbon represented by formula (I):
wherein P and Q may be the same or different from each other and represent hydrogen or an alkyl group, t represents a whole number of 1 to 3, and Ar represents an aromatic hydrocarbon group,
with an oxygen-containing gas in the presence of a compound that captures a radical that corresponds to the arylalkyl hydrocarbon and is represented by the formula (I-2);
wherein P and Q may be the same or different from each other and represent hydrogen or an alkyl group, t represents a whole number of 1 to 3;
and Ar represents an aromatic hydrocarbon group,
said compound that captures the radical being selected from the group consisting of:
(a) a compound represented by formula (IV)
wherein m represents a whole number of 0 to 3;
D and D′ each separately represents:
and wherein A, B, X1, X2, R1, R2, R3, R4 and W each separately represents hydrogen or a substituent comprising an element selected from hydrogen, carbon, oxygen, nitrogen, sulfur, phosphorus, silicon and halogen;
and wherein a bond between each carbon or nitrogen atom ring member and adjoining atom may be a double bond, and
(b) a phosphine oxide.

9 more elements

Dependencies are inferred from the claim text.