PROCEDE DE FABRICATION DE N-PHOSPHONOMETHYL-GLYCINE ET DE SES DERIVES

• Main Author: SANDOR BALINT, ZOLTAN KOLONICS, ANTAL GAAL, JOZSEF FARKAS, LASZLO DUFEK, SANDOR HORVATH ET BELA KARACSONYI
• Format: Patent
• Language: French
• Published: 09.11.1979
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; AGRICULTURE; ANIMAL HUSBANDRY; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES; CHEMISTRY; FISHING; FORESTRY; HUMAN NECESSITIES; HUNTING; METALLURGY; ORGANIC CHEMISTRY; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS; PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF; TRAPPING

La présente invention a pour objet un procédé de fabrication de composés contenant une liaison phosphore-carbone-azote, de formule générale : The invention relates to compounds containing phosphorus- carbon-nitrogen bond of the general formula I wherein R1 and R2 are the same or different and stand for hydrogen or an organic radical, R3 and R4 are the same or different and stand for hydrogen, hydroxy or an organic radical. The compounds are prepared by reacting a phosphorus halide with ammonia, water soluble ammonium salts, primary or secondary amine in the presence of water and further with aldehyde or ketone. The product is recovered by reducing the reaction volume or by adding a water miscible organic solvent to the reaction mixture. The process is preferably suitable for the preparation of N-phosphono- methylglycine and derivatives thereof, which are significant in plant protection as herbicidally active compounds.