Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus acids or salts thereof
Patent
1989-06-29
1990-08-14
Evans, J. E.
Organic compounds -- part of the class 532-570 series
Organic compounds
Phosphorus acids or salts thereof
558170, 556405, C07F 938
Patent
active
049489186
ABSTRACT:
A process for the production of .alpha.-aminoalkylphosphonic acids or salts thereof of the formula A ##STR1## wherein R.sup.1 represents hydrogen, alkyl having from 1 to 4 carbon atoms or CH.sub.2 --C.sub.6 H.sub.5 and X hydrogen or a metal cation, which comprises reacting a compound of the formula B ##STR2## in which R.sup.1 has the same meaning as in formula A and Mp.sym. represents hydrogen or a p-valent metal cation, with a hypohalite of a p-valent metal cation, and isolating the metal salt produced or acidifying the reaction mixture obtained to produce the .alpha.-aminoalkyl-phosphonic acid.
REFERENCES:
Wallis et al., "The Hofmann Reaction" in Organic Reactions, vol. III, Ed. R. Adams et al., John Wiley & Sons, 1946, pp. 267-306.
Rachon et al., Chem. Abstracts 81 63728m, p. 484 (1974).
Rachon et al., Z. Chem., 14, No. 4, pp. 152-154 (1974).
The Merck Index, Eighth Edition (1968), p. 1179.
Maier, L., "Advances in the Chemistry of Aminophosphinic Acids", Phosphorus and Sulfur 14, 295-322 (1983).
Soroka, M. et al., Tetrahedron Letters 52, 5201-5202 (1973).
Speziale, A. J. et al., J. Org. Chem. 23, 1883-1886 (1958).
Bartels Gunter
Kleiner Hans-Jerg
Evans J. E.
Hoechst Aktiengesellschaft
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