Process for preparing solid betaines

Details Process for preparing solid betaines Process for preparing solid betaines

1991-02-08

1992-01-14

Shippen, Michael L.

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

Organic compounds

Carboxylic acids and salts thereof

562553, 562567, C07C22900

Patent

active

050812939

ABSTRACT:
Betaines are produced in solid form by reacting the corresponding quaternary ammonium ester with a base, such as sodium hydroxide, in a polar aprotic solvent in which the betaine is substantially insoluble, the ester being the product obtained by reacting a tert-amine, such as an N-alkyldimethylamine, with an alkyl haloalkanoate. The haloalkanoate is preferably a compound corresponding to the formula X(CH.sub.2).sub.n COOZ in which X is chloro, bromo, or iodo; Z is an alkyl group containing 1-6 carbons; and n is an integer of 1-6. A preferred solvent for use in the process is 2-butanone.

REFERENCES:
patent: 2082275 (1937-06-01), Daimler
patent: 2129264 (1938-09-01), Downing
patent: 2564507 (1951-08-01), Schaeffer
patent: 2800502 (1957-07-01), Vassel
patent: 3480665 (1969-11-01), Nagy
patent: 3555079 (1971-01-01), Murumo
patent: 3649677 (1972-03-01), Morris
patent: 3954845 (1976-05-01), Martinsson
patent: 4832871 (1989-05-01), Bade
Nandakumar, "Journal of the Oil Technologists' Association of India," vol. 11(2), pp. 31-34 (1979).

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