Hydrolysis of 3,5-diamino benzoic acid to produce alpha-resorcyl

Details Hydrolysis of 3,5-diamino benzoic acid to produce alpha-resorcyl Hydrolysis of 3,5-diamino benzoic acid to produce alpha-resorcyl

1975-01-17

1976-10-05

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

423520, 423545, C07C 5100, C07C 3710

Patent

active

039844668

ABSTRACT:
Alpha-resorcylic acid is produced by the hydrolysis of 3,5-diamino benzoic acid in an aqueous solution of ammonium bisulfate. The reactants are contacted at an elevated temperature for a period of time sufficient to hydrolyze the 3,5-diamino benzoic acid to alpha-resorcylic acid and the alpha-resorcylic acid so produced is separated from the reaction mixture. The ammonium sulfate is regenerated to ammonium bisulfate by removing the water and thermally decomposing the by-product ammonium sulfate at an elevated temperature.

REFERENCES:
patent: 2669580 (1954-02-01), Long et al.
patent: 2669581 (1954-02-01), Scalera et al.
patent: 3862245 (1975-01-01), Greco
patent: 3862246 (1975-01-01), Greco

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