Extractive method for the preparation of quaternary salts

Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing

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564291, 568 9, 5483351, C07C20968, C07D23358, C07F 902

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057056960

ABSTRACT:
Quaternary (e.g., tetraalkylammonium and tetraalkylphosphonium) salts containing non-halide anions are prepared by performing an anion exchange reaction by liquid-liquid extraction with a chlorinated solvent of a mixture of an aqueous solution an alkali metal salt of the anion and a corresponding quaternary halide.

REFERENCES:
patent: 4487698 (1984-12-01), Idel et al.
patent: 4892944 (1990-01-01), Mori et al.
U.S. patent application Ser. No. 08/608,073, filed Feb. 28, 1996.

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