Process for the preparation of secondary and tertiary 2-carboxye

Details Process for the preparation of secondary and tertiary 2-carboxye Process for the preparation of secondary and tertiary 2-carboxye

1980-01-17

1982-05-04

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

562512, 562606, 585514, 252431P, 260440, 260446, 260447, 568 8, 568 14, C07F 1504

Patent

active

043281630

ABSTRACT:
A process for preparing a secondary or tertiary 2-carboxyethyl- or carboxymethylphosphine or a salt thereof comprises
saponifying the corresponding cyanoalkyl phosphine with an aqueous-alcoholic alkali metal hydroxide solution, to prepare the alkali metal salt of the corresponding phosphino carboxylic acid,
treating an aqueous solution of the acid salt so produced with a strongly acidic ion exchanger, and
neutralizing the resultant free acid with an alkali metal hydroxide, ammonia or an amine when a salt thereof is to be prepared.

REFERENCES:
patent: 3635937 (1972-01-01), Bauer et al.
patent: 3636091 (1972-01-01), Mason et al.
patent: 3644563 (1972-02-01), Bauer et al.
patent: 3647914 (1972-03-01), Glockner et al.
patent: 3647915 (1972-03-01), Bauer et al.
patent: 3676523 (1972-07-01), Mason
patent: 3686351 (1972-08-01), Mason
patent: 3737475 (1973-06-01), Mason
patent: 3758558 (1973-09-01), Mason
patent: 3825615 (1974-07-01), Lutz
patent: 4020121 (1977-04-01), Kister et al.
Yakovenko et al., Translated from Zhurnal Obshchei Khimii, vol. 46, No. 2, pp. 278-280, (1976).
Podlahova, Collect. Czech. Chem. Comm., vol. 43, pp. 3007-3011, (1978).

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