Process for producing 2,6-naphthalenedicarboxylic acid

Details Process for producing 2,6-naphthalenedicarboxylic acid Process for producing 2,6-naphthalenedicarboxylic acid

1985-08-28

1987-07-21

Reamer, James H.

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

Organic compounds

Carboxylic acids and salts thereof

C07C 51265

Patent

active

046819789

ABSTRACT:
Disclosed herein is a process for producing 2,6-naphthalenedicarboxylic acid, comprising (1) oxidizing 2,6-diisopropylnaphthalene in a lower fatty acid as a solvent in the presence of a catalyst comprising a water-soluble cobalt salt and/or a water-soluble manganese salt in an amount of at least 0.5 gram-atom of Co and/or Mn to 1 mol of 2,6-diisopropylnaphthalene by an oxygen-containing gas, thereby obtaining isopropylnaphthalene-monocarboxylic acid and (2) further oxidizing the thus obtained 6-isopropyl-2-naphthoic acid in the lower fatty acid in the presence of the catalyst comprising a water-soluble cobalt salt and/or a water-soluble manganese salt in an amount of from 0.0025 to 0.12 gram-atom to 1 mol of 6-isopropyl-2-naphthoic acid by the oxygen-containing gas, thereby obtaining 2,6-naphthalenedicarboxylic acid.

REFERENCES:
Fortuin et al., Petroleum Refiner, vol. 38, No. 6, 1959, pp. 189-193.
Chem. Abstracts, vol. 85, abstract No. 46254u, 1976 (abstract of Japan Kokai 76/6953).
Chem. Abstracts, vol. 79, abstract No. 136893g, 1973 (abstract of JP 73/27318).
Chem. Abstracts, vol. 87, abstract No. 134813x, 1977 (abstract of JP Kokai 77/17453).

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