Process for producing dicarboxylic acids

Details Process for producing dicarboxylic acids Process for producing dicarboxylic acids

Filed on

2006-03-21

Date issued

2006-03-21

Examiner

Richter, Johann (Department: 1621)

Patent Class

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

SubClass

Organic compounds

SubSubClass

Carboxylic acids and salts thereof

Other Related Categories

C562S542000, C562S543000, C562S590000

Type

Reexamination Certificate

Status

active

Patent number

07015356

Description

ABSTRACT:
A carboxylic acid is produced by oxidative cleavage of a cycloalkane with oxygen and performs a reaction in the presence of a catalyst including an imide compound and a metallic compound, the imide compound having a cyclic imide skeleton represented by the following Formula (I):wherein X is an oxygen atom or an —OR group, and wherein R is a hydrogen atom or a hydroxyl-protecting group, under conditions of a reaction temperature of 80° C. or higher and a concentration of the cycloalkane of 21% by weight or more.

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Ishii et al. , Alkane Oxidation with Molecular Oxygen Using a New Efficient Catalytic System: N-Hydroxyphthalimide (NHPI) Combined with Co(acac)n (n=2 or 3), J. Org. Chem., 61 (14), 4520-4526.

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