Process for preparing D,L-2-amino-4-methylphosphinobutyric acid

Details Process for preparing D,L-2-amino-4-methylphosphinobutyric acid Process for preparing D,L-2-amino-4-methylphosphinobutyric acid

1979-06-15

1981-04-28

Evans, Joseph E.

Chemistry of carbon compounds

Dipeptides, e.g., aspartame, anserine, carnosine, etc.

260950, 2605025, C07F 932, C07F 930

Patent

active

042645328

ABSTRACT:
PCT No. PCT/JP78/00058 Sec. 371 Date June 15, 1979 Sec. 102(e) Date June 15, 1979 PCT Field Dec. 18, 1978 PCT Pub. No. WO79/00405 PCT Pub. Date July 12, 1979
This invention relates to a novel process for preparing D,L-2-amino-4-methylphosphinobutyric acid having herbicidal and antifungicidal activities which comprises subjecting acrolein to reaction with a dialkyl phosphonite to synthesize an acetal of an ester of 3-oxopropylmethylphosphinic acid; treating the thus obtained compound with an acid for deacetalization to obtain an ester of 3-oxopropylmethylphosphinic acid and then applying the Strecker's process used for amino synthesis to the thus obtained ester.

REFERENCES:
patent: 2631162 (1953-03-01), Ladd et al.
patent: 2664438 (1953-12-01), Ladd et al.
patent: 2971019 (1961-02-01), Ladd et al.
patent: 3832394 (1974-08-01), Niida et al.
Gruszecka et al., "Chem. Abstracts" vol. 85, No. 1, (1976), p. 467, item 85:5777y. _

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