Novel glycylmethylphosphinic acid derivatives, process for their

Details Novel glycylmethylphosphinic acid derivatives, process for their Novel glycylmethylphosphinic acid derivatives, process for their

1978-08-07

1980-11-11

Mills, Catherine L.

Chemistry: fertilizers

Processes and products

Forms or conditioning

71 71, 71 76, 71 78, 260941, 2605025, 260970, A01N 5710, C07F 930, C07F 932

Patent

active

042330564

ABSTRACT:
The present invention relates to novel herbicidally active and plant growth-regulating glycylmethylphosphinic acid derivatives of the formula ##STR1## wherein R represents hydrogen, --CH.sub.2 COOH or an easily removable radical (e.g. benzyl, tert-butyl), R' represents a --OH or --OR.sub.1 group, in which R.sub.1 is a cation, a lower aliphatic radical, cycloalkyl or NH.sub.2, R" represents hydrogen, a cation or lower alkyl and R'" represents optionally substituted alkyl or phenyl. These compounds are obtained by reacting a N-substituted glycine HOOC--CH.sub.2 --NH--R with formaldehyde and a phosphonous acid ##STR2## in a strongly acid solution and optionally removing the radical R by catalytic hydrogenation or with HBr. The compounds of the formula I are used as active ingredients of compositions especially for the post-emergent control of weeds or for inhibiting plant growth.

REFERENCES:
patent: 3160632 (1964-12-01), Toy et al.
patent: 3894861 (1975-07-01), Hartman
patent: 3988142 (1976-10-01), Franz
Maier, Helv. Chim. Acta., vol. 50 (1967), 1742-1746.
Il'ina et al., Izv. Akad. Nuk. USSR., vol. 8 (1968), 1860-1862.
Ivanov et al., J. Gen. Chem., USSR, vol. 37 (1966), 1768-1773.

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