Process for preparing diketones and keto-acids

Details Process for preparing diketones and keto-acids Process for preparing diketones and keto-acids

1990-07-23

1992-04-21

Reamer, James H.

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

Organic compounds

Oxygen containing

562460, 568 42, 568 31, 568316, 568306, 558415, 564218, 564430, 564329, C07C 4546

Patent

active

051070294

ABSTRACT:
This invention concerns a process for preparing diketones and keto-acids by reacting a dicarboxylic acid and an aromatic compound in the presence of an alkylsulfonic acid such as methanesulfonic acid and an organic anhydride compound such as methanesulfonic anhydride or trifluoroacetic anhydride. The diketones and keto-acids can be used to prepare polyketones which are useful as molding plastics, coatings, films, fibers, and the like.

REFERENCES:
patent: 3767620 (1973-10-01), Angelo et al.
patent: 4453010 (1984-06-01), Staniland
patent: 4611033 (1986-09-01), Maresca
patent: 4816556 (1989-03-01), Gay et al.
M. Ueda et al., Makromol., 20, pp. 2675-2678 (1987).
M. Ueda et al., Makromol. Chem., rapid Commun., 5, pp. 833-836 (1985).

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