Process for the preparation of aromatic dicarboxylic acid dichlo

Details Process for the preparation of aromatic dicarboxylic acid dichlo Process for the preparation of aromatic dicarboxylic acid dichlo

1980-06-30

1982-03-30

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252426, C07C 5160

Patent

active

043223737

ABSTRACT:
A one-stage process for the preparation of pure aromatic dicarboxylic acid dichlorides by reacting an aromatic dicarboxylic acid or an aromatic dicarboxylic acid mixture with phosgene, optionally, in a solvent or diluent, with phosphine imines, phosphorimidates or mixtures thereof as catalysts.

REFERENCES:
patent: 3810940 (1974-05-01), Hauser

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