IL72488A - N-sulfonyl-n'-phosphono-methylglycinamide derivatives,their preparation and herbicidal compositions containing them - Google Patents

N-sulfonyl-n'-phosphono-methylglycinamide derivatives,their preparation and herbicidal compositions containing them

Info

Publication number
IL72488A
IL72488A IL72488A IL7248884A IL72488A IL 72488 A IL72488 A IL 72488A IL 72488 A IL72488 A IL 72488A IL 7248884 A IL7248884 A IL 7248884A IL 72488 A IL72488 A IL 72488A
Authority
IL
Israel
Prior art keywords
methylglycinamide
phosphono
sulfonyl
derivatives
preparation
Prior art date
Application number
IL72488A
Other languages
English (en)
Other versions
IL72488A0 (en
Original Assignee
Rhone Poulenc Agrochimie
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR8312620A external-priority patent/FR2549839B1/fr
Priority claimed from FR8402988A external-priority patent/FR2560198B1/fr
Application filed by Rhone Poulenc Agrochimie filed Critical Rhone Poulenc Agrochimie
Publication of IL72488A0 publication Critical patent/IL72488A0/xx
Publication of IL72488A publication Critical patent/IL72488A/xx

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/28—Phosphorus compounds with one or more P—C bonds
    • C07F9/38—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
    • C07F9/44—Amides thereof
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/28—Phosphorus compounds with one or more P—C bonds
    • C07F9/38—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
    • C07F9/3804—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)] not used, see subgroups
    • C07F9/3808—Acyclic saturated acids which can have further substituents on alkyl
    • C07F9/3813—N-Phosphonomethylglycine; Salts or complexes thereof
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
    • A01N57/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds
    • A01N57/20—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds containing acyclic or cycloaliphatic radicals
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
    • A01N57/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds
    • A01N57/22—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds containing aromatic radicals
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/28—Phosphorus compounds with one or more P—C bonds
    • C07F9/38—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
    • C07F9/40—Esters thereof
    • C07F9/4003—Esters thereof the acid moiety containing a substituent or a structure which is considered as characteristic
    • C07F9/4006—Esters of acyclic acids which can have further substituents on alkyl

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Molecular Biology (AREA)
  • Pest Control & Pesticides (AREA)
  • Agronomy & Crop Science (AREA)
  • Plant Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
IL72488A 1983-07-27 1984-07-24 N-sulfonyl-n'-phosphono-methylglycinamide derivatives,their preparation and herbicidal compositions containing them IL72488A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8312620A FR2549839B1 (fr) 1983-07-27 1983-07-27 Nouveaux herbicides a groupe sulfonamide derives de la n-phosphonomethyl glycine
FR8402988A FR2560198B1 (fr) 1984-02-23 1984-02-23 Esters de la famille de la n-phosphonomethylglycine et leur utilisation pour la preparation d'herbicides connus

Publications (2)

Publication Number Publication Date
IL72488A0 IL72488A0 (en) 1984-11-30
IL72488A true IL72488A (en) 1989-01-31

Family

ID=26223542

Family Applications (1)

Application Number Title Priority Date Filing Date
IL72488A IL72488A (en) 1983-07-27 1984-07-24 N-sulfonyl-n'-phosphono-methylglycinamide derivatives,their preparation and herbicidal compositions containing them

Country Status (25)

Country Link
US (2) US4738708A (el)
EP (2) EP0272508A3 (el)
KR (1) KR850001224A (el)
AR (1) AR240945A1 (el)
AT (1) ATE43603T1 (el)
AU (1) AU582120B2 (el)
BG (1) BG41475A3 (el)
BR (1) BR8403732A (el)
CA (2) CA1256446A (el)
DD (1) DD218544A5 (el)
DE (1) DE3478441D1 (el)
DK (1) DK364984A (el)
EG (1) EG17125A (el)
ES (8) ES8603901A1 (el)
FI (1) FI78704C (el)
GB (2) GB2144425B (el)
GR (1) GR82228B (el)
IL (1) IL72488A (el)
NZ (1) NZ209010A (el)
OA (1) OA07757A (el)
PH (2) PH21384A (el)
PL (1) PL141870B1 (el)
PT (1) PT78984B (el)
RO (1) RO89639A (el)
TR (1) TR22114A (el)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES8603901A1 (es) * 1983-07-27 1986-01-01 Rhone Poulenc Agrochimie Procedimiento de preparacion de sulfonamidas con grupo ansinometilfosfonico
FR2576024B1 (fr) * 1985-01-14 1988-01-08 Rhone Poulenc Agrochimie Herbicides de type n - (phosphonomethylglycyl) sulfonylamines
FR2576181B1 (fr) * 1985-01-23 1987-04-03 Rhone Poulenc Agrochimie Melanges herbicides a base de compose de type n-(phosphonomethylglycyl)
FR2579210B1 (fr) * 1985-03-21 1987-09-11 Rhone Poulenc Agrochimie Preparation d'herbicides a groupe phosphonates et d'intermediaires a partir de benzoxazines
FR2590901B1 (fr) * 1985-12-04 1988-07-29 Rhone Poulenc Agrochimie Procede de preparation de n-sulfonyl n-(phosphonomethyl-glycyl) amines utilisables comme herbicides
FR2611204B1 (fr) * 1987-02-19 1989-05-05 Rhone Poulenc Agrochimie Composes intermediaires utiles pour la preparation d'herbicides
WO1992011764A1 (en) * 1991-01-08 1992-07-23 Monsanto Company Improved herbicidal formulation
DE4326887A1 (de) * 1993-08-11 1995-02-16 Hoechst Ag Verfahren zur Herstellung von N-substituierten Aminoalkylenphosphonsäureestern
US6505420B1 (en) 1996-02-09 2003-01-14 Reebok International Ltd. Cushioning member for an article of footwear
US7943388B2 (en) * 2003-11-14 2011-05-17 3M Innovative Properties Company Acoustic sensors and methods
US7169933B2 (en) * 2003-11-14 2007-01-30 3M Innovative Properties Company N-sulfonylaminocarbonyl containing compounds
US7361767B2 (en) * 2003-11-14 2008-04-22 3M Innovative Properties Company N-sulfonyldicarboximide containing tethering compounds
KR101130956B1 (ko) 2003-11-14 2012-03-30 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Ｎ-술포닐아미노카르보닐 함유 화합물
US7423155B2 (en) * 2003-11-14 2008-09-09 3M Innovative Properties Company N-sulfonyldicarboximide containing tethering compounds
NZ553629A (en) * 2004-09-17 2010-12-24 Monsanto Technology Llc Glyphosate formulations with early burndown symptoms
US7544754B2 (en) 2005-09-30 2009-06-09 3M Innovative Properties Company Crosslinked polymers with amine binding groups
US7544756B2 (en) * 2005-09-30 2009-06-09 3M Innovative Properties Company Crosslinked polymers with amine binding groups

Family Cites Families (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3160632A (en) * 1961-01-30 1964-12-08 Stauffer Chemical Co Aminomethylenephosphinic acids, salts thereof, and process for their production
NL285361A (el) * 1961-11-13 1900-01-01
US3455675A (en) * 1968-06-25 1969-07-15 Monsanto Co Aminophosphonate herbicides
PH16509A (en) * 1971-03-10 1983-11-08 Monsanto Co N-phosphonomethylglycine phytotoxicant composition
US3799758A (en) * 1971-08-09 1974-03-26 Monsanto Co N-phosphonomethyl-glycine phytotoxicant compositions
US4659860A (en) * 1971-08-09 1987-04-21 Monsanto Company Thioester of n-phosphonomethylglycine
US3977860A (en) * 1971-08-09 1976-08-31 Monsanto Company Herbicidal compositions and methods employing esters of N-phosphonomethylglycine
GB1436843A (en) * 1972-07-21 1976-05-26 Ici Ltd Preparation of n-phosphonomethyl-glycine
RO67869A (ro) * 1972-12-11 1981-06-22 Mensanto Co,Us Procedeu pentru prepararea unor derivati ai n-fosfonometil-gliciu n-oxizilor
US3835000A (en) * 1972-12-21 1974-09-10 Monsanto Co Electrolytic process for producing n-phosphonomethyl glycine
US3868407A (en) * 1973-11-21 1975-02-25 Monsanto Co Carboxyalkyl esters of n-phosphonomethyl glycine
US3948975A (en) * 1974-08-05 1976-04-06 Monsanto Company Hydroxyalkyl esters of N-phosphonomethyl glycine
US3993467A (en) * 1974-08-05 1976-11-23 Monsanto Company Hydroxyalkyl esters of N-phosphonomethyl glycine and the herbicidal use thereof
US3972915A (en) * 1974-08-14 1976-08-03 Monsanto Company N-phosphonomethylglycine phenyl hydrazides
US3927080A (en) * 1974-09-03 1975-12-16 Monsanto Co Process for producing N-phosphonomethyl glycine
US4405531A (en) * 1975-11-10 1983-09-20 Monsanto Company Salts of N-phosphonomethylglycine
US4106923A (en) * 1975-11-10 1978-08-15 Monsanto Company Phosphonomethyl glycine ester anhydrides, herbicidal composition containing same and use thereof
EP0000767B1 (de) * 1977-08-11 1980-11-26 Ciba-Geigy Ag Glycylmethyl-phosphinsäurederivate, ihre Herstellung und Verwendung
US4140132A (en) * 1978-03-23 1979-02-20 Dahl Joseph D Variable rate timer for a cardiac pacemaker
US4395276A (en) * 1980-06-18 1983-07-26 Monsanto Company Thiosulfenamide derivatives of N-phosphonomethylglycinonitriles as herbicides
US4428755A (en) * 1980-07-09 1984-01-31 General Electric Company Process for the production of silicone carbide composite
US4315765A (en) * 1980-12-04 1982-02-16 Stauffer Chemical Company Trialkylsulfonium salts of n-phosphonomethylglycine and their use as plant growth regulators and herbicides
US4384880A (en) * 1980-12-04 1983-05-24 Stauffer Chemical Company Trialkylsulfonium salts of N-phosphonomethyl-glycine and their use as plant growth regulators and herbicides
EP0055695A1 (de) * 1980-12-30 1982-07-07 Ciba-Geigy Ag Verfahren zur Herstellung von N-phosphonomethylglycin
US4395374A (en) * 1981-01-02 1983-07-26 Monsanto Company Alkyl N-arylsulfenyl-N-diaryloxy-phosphinylmethylglycinates
US4666500A (en) * 1981-01-02 1987-05-19 Monsanto Company Alkyl N-arylsulfenyl-N-diaryloxy-phosphinylmethylglycinates
US4388103A (en) * 1981-06-19 1983-06-14 Monsanto Company Alkylphosphonate monoesters of N-phosphonomethylglycinate as herbicides
US4525202A (en) * 1981-08-24 1985-06-25 Stauffer Chemical Co. Phosphonium salts of N-phosphonomethylglycine and their use as herbicides and plant growth regulants
US4405356A (en) * 1981-08-31 1983-09-20 Monsanto Company Ester derivatives of N-arylsulfinyl-N-phosphonomethylglycinates as herbicides
US4445928A (en) * 1981-10-05 1984-05-01 Monsanto Company Herbicidal aminosulfenamide derivatives of N-phosphonomethylglycine triesters
US4407763A (en) * 1981-10-05 1983-10-04 Monsanto Company Thiosulfenamide derivatives of N-phosphonomethylglycinonitriles
US4508663A (en) * 1981-10-05 1985-04-02 Monsanto Company Process for preparing thiosulfenamide derivatives of N-phosphonomethylglycinonitriles
US4554009A (en) * 1981-10-05 1985-11-19 Monsanto Company Method of controlling undesired plants with thiosulfenamide derivatives of n-phosphonomethylglycinonitriles
US4401604A (en) * 1981-10-05 1983-08-30 Monsanto Company Process for preparing thiosulfenamide derivatives of N-phosphonomethylglycine triesters
US4401455A (en) * 1981-10-05 1983-08-30 Monsanto Company Ester derivatives of N-alkylthio- N-cycloalkyl thio-N-phosphonomethylglycine and herbicidal methods using same
US4368162A (en) * 1981-11-02 1983-01-11 Ciba-Geigy Corporation Process for producing aminomethylphosphonic acid
US4486358A (en) * 1982-06-24 1984-12-04 Ciba-Geigy Corporation Process for producing N-phosphonomethylglycine
IL65187A (en) * 1982-03-08 1985-03-31 Geshuri Lab Ltd N-phosphonomethylglycine derivatives,processes for their preparation and herbicidal compositions containing them
US4476063A (en) * 1982-06-22 1984-10-09 Stauffer Chemical Company N-Acylaminomethyl-N-cyanomethyl phosphonates
US4427599A (en) * 1982-06-22 1984-01-24 Stauffer Chemical Company Method for preparation of N-phosphonomethylglycine
US4534902A (en) * 1982-06-22 1985-08-13 Stauffer Chemical Company Method for preparation of N-phosphonomethylglycine
US4422982A (en) * 1982-06-30 1983-12-27 Stauffer Chemical Company Method for preparation of N-phosphonomethylglycine
US4482504A (en) * 1982-08-30 1984-11-13 Stauffer Chemical Company Method for preparation of N-phosphonomethylglycine
US4534904A (en) * 1982-11-19 1985-08-13 Ciba-Geigy Corporation Process for producing N-phosphonomethylglycine
US4439373A (en) * 1982-12-27 1984-03-27 Stauffer Chemical Company Process for preparing phosphonomethylated amino acids
US4491548A (en) * 1983-04-28 1985-01-01 Stauffer Chemical Company Process for preparing phosphonomethylated amino acids
ES8603901A1 (es) * 1983-07-27 1986-01-01 Rhone Poulenc Agrochimie Procedimiento de preparacion de sulfonamidas con grupo ansinometilfosfonico
EP0141794A1 (en) * 1983-08-04 1985-05-15 Monsanto Company Aralower alkyl and substituted aralower alkyl esters of N-phosphonomethylglycines
FR2575161B1 (fr) * 1984-12-26 1989-03-31 Rhone Poulenc Agrochimie Preparation d'intermediaires phosphores pour usages herbicides

Also Published As

Publication number Publication date
GR82228B (el) 1984-12-13
EP0135454A1 (fr) 1985-03-27
AR240945A2 (es) 1991-03-27
ES547466A0 (es) 1986-03-16
GB2144425B (en) 1988-06-29
ES534413A0 (es) 1986-01-01
ES8607327A1 (es) 1986-05-16
ES8607330A1 (es) 1986-05-16
IL72488A0 (en) 1984-11-30
ES547465A0 (es) 1986-03-16
PL141870B1 (en) 1987-09-30
AR240945A1 (es) 1991-03-27
ES547469A0 (es) 1986-05-16
FI842960A (fi) 1985-01-28
PL248926A1 (en) 1985-08-27
ES8607329A1 (es) 1986-05-16
BG41475A3 (en) 1987-06-15
ES547471A0 (es) 1986-05-16
PT78984B (fr) 1986-10-23
DD218544A5 (de) 1985-02-13
ES547467A0 (es) 1986-05-16
EP0135454B1 (fr) 1989-05-31
PH21384A (en) 1987-10-15
ES8605528A1 (es) 1986-03-16
EG17125A (en) 1991-03-30
US4894082A (en) 1990-01-16
AU3113384A (en) 1985-01-31
GB2193497B (en) 1988-06-29
DK364984D0 (da) 1984-07-26
ES8603901A1 (es) 1986-01-01
FI78704C (fi) 1989-09-11
ES8607328A1 (es) 1986-05-16
FI842960A0 (fi) 1984-07-25
AU582120B2 (en) 1989-03-16
RO89639A (ro) 1986-06-30
DK364984A (da) 1985-01-28
CA1256446A (en) 1989-06-27
KR850001224A (ko) 1985-03-16
DE3478441D1 (en) 1989-07-06
US4738708A (en) 1988-04-19
GB8418961D0 (en) 1984-08-30
PT78984A (fr) 1984-08-01
GB2193497A (en) 1988-02-10
FI78704B (fi) 1989-05-31
ES8607326A1 (es) 1986-05-16
EP0272508A3 (fr) 1988-10-05
ATE43603T1 (de) 1989-06-15
GB2144425A (en) 1985-03-06
EP0272508A2 (fr) 1988-06-29
GB8626464D0 (en) 1986-12-03
OA07757A (fr) 1985-08-30
PH21723A (en) 1988-02-05
ES8605527A1 (es) 1986-03-16
ES547470A0 (es) 1986-05-16
BR8403732A (pt) 1985-07-02
CA1249598A (en) 1989-01-31
ES547468A0 (es) 1986-05-16
NZ209010A (en) 1990-12-21
TR22114A (tr) 1986-04-25

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