BE532057A - - Google Patents
Info
- Publication number
- BE532057A BE532057A BE532057DA BE532057A BE 532057 A BE532057 A BE 532057A BE 532057D A BE532057D A BE 532057DA BE 532057 A BE532057 A BE 532057A
- Authority
- BE
- Belgium
- Prior art keywords
- dimethylcarbamate
- chlorophenyl
- tolyl
- morpholinecarboxylate
- methyl
- Prior art date
Links
- -1 Phenyl dimethylcarbamate O-tolyl dimethylcarbamate Chemical compound 0.000 claims description 9
- DWLVWMUCHSLGSU-UHFFFAOYSA-M N,N-dimethylcarbamate Chemical compound CN(C)C([O-])=O DWLVWMUCHSLGSU-UHFFFAOYSA-M 0.000 claims description 7
- 230000002363 herbicidal Effects 0.000 claims description 6
- 125000005843 halogen group Chemical group 0.000 claims description 4
- 125000004435 hydrogen atoms Chemical group [H]* 0.000 claims description 4
- BSCCSDNZEIHXOK-UHFFFAOYSA-N phenyl carbamate Chemical class NC(=O)OC1=CC=CC=C1 BSCCSDNZEIHXOK-UHFFFAOYSA-N 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000004009 herbicide Substances 0.000 claims description 3
- YNAVUWVOSKDBBP-UHFFFAOYSA-N morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 claims description 3
- 229940113083 morpholine Drugs 0.000 claims description 3
- STUHQDIOZQUPGP-UHFFFAOYSA-M morpholine-4-carboxylate Chemical compound [O-]C(=O)N1CCOCC1 STUHQDIOZQUPGP-UHFFFAOYSA-M 0.000 claims description 3
- IXHORMVRGWCGGR-UHFFFAOYSA-N (4-chloro-2-methylphenyl) N,N-dimethylcarbamate Chemical compound CN(C)C(=O)OC1=CC=C(Cl)C=C1C IXHORMVRGWCGGR-UHFFFAOYSA-N 0.000 claims description 2
- QTILATGINOFTLP-UHFFFAOYSA-N (4-chlorophenyl) N,N-dimethylcarbamate Chemical compound CN(C)C(=O)OC1=CC=C(Cl)C=C1 QTILATGINOFTLP-UHFFFAOYSA-N 0.000 claims description 2
- 230000000875 corresponding Effects 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- BSFCOZXUSUSSAW-UHFFFAOYSA-N (3-methylphenyl) N,N-dimethylcarbamate Chemical compound CN(C)C(=O)OC1=CC=CC(C)=C1 BSFCOZXUSUSSAW-UHFFFAOYSA-N 0.000 claims 1
- ZHXCDUWUCWUEPJ-UHFFFAOYSA-N (4-methylphenyl) N-methylcarbamate Chemical compound CNC(=O)OC1=CC=C(C)C=C1 ZHXCDUWUCWUEPJ-UHFFFAOYSA-N 0.000 claims 1
- CKMRVKWJCOOIFK-UHFFFAOYSA-N (4-nitrophenyl) N-methylcarbamate Chemical compound CNC(=O)OC1=CC=C([N+]([O-])=O)C=C1 CKMRVKWJCOOIFK-UHFFFAOYSA-N 0.000 claims 1
- 241000907681 Morpho Species 0.000 claims 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims 1
- 241000196324 Embryophyta Species 0.000 description 16
- 230000004927 fusion Effects 0.000 description 12
- 239000000047 product Substances 0.000 description 7
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 241000209140 Triticum Species 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 235000021307 wheat Nutrition 0.000 description 5
- 240000007742 Raphanus sativus Species 0.000 description 4
- 235000006140 Raphanus sativus var sativus Nutrition 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 4
- 235000016068 Berberis vulgaris Nutrition 0.000 description 3
- 241000335053 Beta vulgaris Species 0.000 description 3
- 235000011293 Brassica napus Nutrition 0.000 description 3
- 240000008100 Brassica rapa Species 0.000 description 3
- 235000000540 Brassica rapa subsp rapa Nutrition 0.000 description 3
- 240000008051 Cichorium intybus Species 0.000 description 3
- 235000007542 Cichorium intybus Nutrition 0.000 description 3
- 240000006240 Linum usitatissimum Species 0.000 description 3
- 235000004431 Linum usitatissimum Nutrition 0.000 description 3
- 235000007688 Lycopersicon esculentum Nutrition 0.000 description 3
- RLSSMJSEOOYNOY-UHFFFAOYSA-N M-Cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 description 3
- 240000004658 Medicago sativa Species 0.000 description 3
- 240000003768 Solanum lycopersicum Species 0.000 description 3
- 235000017585 alfalfa Nutrition 0.000 description 3
- 235000017587 alfalfa Nutrition 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- HFZWRUODUSTPEG-UHFFFAOYSA-N 2,4-Dichlorophenol Chemical compound OC1=CC=C(Cl)C=C1Cl HFZWRUODUSTPEG-UHFFFAOYSA-N 0.000 description 2
- 244000075850 Avena orientalis Species 0.000 description 2
- 235000007319 Avena orientalis Nutrition 0.000 description 2
- 235000005633 Chrysanthemum balsamita Nutrition 0.000 description 2
- 244000260524 Chrysanthemum balsamita Species 0.000 description 2
- YIIMEMSDCNDGTB-UHFFFAOYSA-N Dimethylcarbamoyl chloride Chemical compound CN(C)C(Cl)=O YIIMEMSDCNDGTB-UHFFFAOYSA-N 0.000 description 2
- 206010053759 Growth retardation Diseases 0.000 description 2
- 240000005158 Phaseolus vulgaris Species 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 2
- 240000008042 Zea mays Species 0.000 description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- KXDHJXZQYSOELW-UHFFFAOYSA-M carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- 230000022534 cell killing Effects 0.000 description 2
- 235000005822 corn Nutrition 0.000 description 2
- 235000005824 corn Nutrition 0.000 description 2
- 230000009089 cytolysis Effects 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 230000035784 germination Effects 0.000 description 2
- 231100000001 growth retardation Toxicity 0.000 description 2
- 230000017074 necrotic cell death Effects 0.000 description 2
- 125000003854 p-chlorophenyl group Chemical group [H]C1=C([H])C(*)=C([H])C([H])=C1Cl 0.000 description 2
- 230000000885 phytotoxic Effects 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 238000004382 potting Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- FWDSPHYPDFOEMZ-UHFFFAOYSA-N (3,5-dimethylphenyl) N,N-dimethylcarbamate Chemical compound CN(C)C(=O)OC1=CC(C)=CC(C)=C1 FWDSPHYPDFOEMZ-UHFFFAOYSA-N 0.000 description 1
- ZUJJLVPPYIIDDP-UHFFFAOYSA-N (4-chloro-3-methylphenyl) N,N-diethylcarbamate Chemical compound CCN(CC)C(=O)OC1=CC=C(Cl)C(C)=C1 ZUJJLVPPYIIDDP-UHFFFAOYSA-N 0.000 description 1
- VUKKITSVDNZQSM-UHFFFAOYSA-N (4-chloro-3-methylphenyl) N,N-dimethylcarbamate Chemical compound CN(C)C(=O)OC1=CC=C(Cl)C(C)=C1 VUKKITSVDNZQSM-UHFFFAOYSA-N 0.000 description 1
- FRZQFSGWVPGFDY-UHFFFAOYSA-N (4-chlorophenyl) N,N-diethylcarbamate Chemical compound CCN(CC)C(=O)OC1=CC=C(Cl)C=C1 FRZQFSGWVPGFDY-UHFFFAOYSA-N 0.000 description 1
- ZQDIQOWSBXBLGH-UHFFFAOYSA-N (4-chlorophenyl) morpholine-4-carboxylate Chemical compound C1=CC(Cl)=CC=C1OC(=O)N1CCOCC1 ZQDIQOWSBXBLGH-UHFFFAOYSA-N 0.000 description 1
- MPHMAHGKEOGQKH-UHFFFAOYSA-N (4-methylphenyl) N,N-dimethylcarbamate Chemical compound CN(C)C(=O)OC1=CC=C(C)C=C1 MPHMAHGKEOGQKH-UHFFFAOYSA-N 0.000 description 1
- XNHCGFLXFHEXBN-UHFFFAOYSA-N (4-methylphenyl) morpholine-4-carboxylate Chemical compound C1=CC(C)=CC=C1OC(=O)N1CCOCC1 XNHCGFLXFHEXBN-UHFFFAOYSA-N 0.000 description 1
- YBRIFDNEMBTBMJ-UHFFFAOYSA-N (4-nitrophenyl) N,N-dimethylcarbamate Chemical compound CN(C)C(=O)OC1=CC=C([N+]([O-])=O)C=C1 YBRIFDNEMBTBMJ-UHFFFAOYSA-N 0.000 description 1
- 235000007558 Avena sp Nutrition 0.000 description 1
- 208000002352 Blister Diseases 0.000 description 1
- 241000197194 Bulla Species 0.000 description 1
- MCWXGJITAZMZEV-UHFFFAOYSA-N Dimethoate Chemical compound CNC(=O)CSP(=S)(OC)OC MCWXGJITAZMZEV-UHFFFAOYSA-N 0.000 description 1
- ROORDVPLFPIABK-UHFFFAOYSA-N Diphenyl carbonate Chemical class C=1C=CC=CC=1OC(=O)OC1=CC=CC=C1 ROORDVPLFPIABK-UHFFFAOYSA-N 0.000 description 1
- APRJFNLVTJWEPP-UHFFFAOYSA-M N,N-diethylcarbamate Chemical compound CCN(CC)C([O-])=O APRJFNLVTJWEPP-UHFFFAOYSA-M 0.000 description 1
- RRIWSQXXBIFKQM-UHFFFAOYSA-M N-benzylcarbamate Chemical compound [O-]C(=O)NCC1=CC=CC=C1 RRIWSQXXBIFKQM-UHFFFAOYSA-M 0.000 description 1
- 206010067482 No adverse event Diseases 0.000 description 1
- 241000490025 Schefflera digitata Species 0.000 description 1
- 240000004668 Valerianella locusta Species 0.000 description 1
- 235000003560 Valerianella locusta Nutrition 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 235000015111 chews Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 150000001896 cresols Chemical class 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 235000004426 flaxseed Nutrition 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 235000015250 liver sausages Nutrition 0.000 description 1
- 125000000040 m-tolyl group Chemical group [H]C1=C([H])C(*)=C([H])C(=C1[H])C([H])([H])[H] 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L na2so4 Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-M phenolate Chemical compound [O-]C1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-M 0.000 description 1
- 229940031826 phenolate Drugs 0.000 description 1
- AHWALFGBDFAJAI-UHFFFAOYSA-N phenyl carbonochloridate Chemical class ClC(=O)OC1=CC=CC=C1 AHWALFGBDFAJAI-UHFFFAOYSA-N 0.000 description 1
- SVWBBVZRYSQHPF-UHFFFAOYSA-N phenyl morpholine-4-carboxylate Chemical compound C1COCCN1C(=O)OC1=CC=CC=C1 SVWBBVZRYSQHPF-UHFFFAOYSA-N 0.000 description 1
- 231100000208 phytotoxic Toxicity 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 150000005619 secondary aliphatic amines Chemical class 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D295/00—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
- C07D295/16—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms acylated on ring nitrogen atoms
- C07D295/20—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms acylated on ring nitrogen atoms by radicals derived from carbonic acid, or sulfur or nitrogen analogues thereof
- C07D295/205—Radicals derived from carbonic acid
-
- 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
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
- A01N47/22—O-Aryl or S-Aryl esters thereof
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Dentistry (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Plant Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
<Desc/Clms Page number 1>
La présente invention se rapporte à la fabrication de carbamates de phényle correspondant à la formule générale
EMI1.1
dans laquelle
R est un atome d'hydrogène ou d'halogène ou un radical aliphati- 'que inférieur ou un radical nitro;
R' est un atome d'hydrogène ou d'halogène;
R" est un radical aliphatique inférieur, les deux radicaux R" peu- vent être liés entre eux par un pont oxygène de manière à former une morpho- line ; n est un nombre entier compris entre 1 et 3.
Ces composés possèdent des propriétés herbicides sélectives, c'est- à-dire qu'ils détruisent des plantes déterminées et en laissent d'autres pra- tiquement inaltérées.
Les carbamates de phényle se préparent selon divers procédés. On peut, par exemple, traiter des halogénures de carbamyle par un phénol ou un phénolate alcalin substitué. On peut aussi faire réagir une amine alipha- tique secondaire ou une morpholine avec un chloroformiate de phényle substi- tué ou avec un carbonate de diphényle substitué.
Pour déterminer les propriétés herbicides des produits en ques- tion, on a recours à diverses méthodes. Dans tous les cas, on commence par préparer une solution du produit dans un solvant n'ayant aucune action her- bicide sur la plante soumise à l'essai. Les tests appliqués se définissent comme suit :
Méthode A. On pulvérise sur des graines semées dans du terreau une solution du produit étudié.
Méthode B. On dépose un certain nombre de gouttes de cette solu- tion à des endroits déterminés d'une plante. Cette méthode donne les mêmes résultats qu'une pulvérisation sur des plantes développées; elle permet en outre de distinguer les herbicides de contact qui ne provoquent des nécro- ses qu'aux endroits traités et les herbicides télétoxiques qui détruisent la plante entière.
EMI1.2
Exemple 1, préparation de , de m-to1vle.
Un mélange de 54 g de m-crésol (0,5mole) et de 53,8 g de chlorure de diméthylcarbamyle (0,5 mole) dans 100 cm3 d'éther est traité par une solu- tion méthanollque concentrée de 28 g de potasse caustique (0,5mole). La réaction exothermique est achevée par chauffage à reflux pendant une heure environ. Après--refroidissement, le chlorure de potassium formé est éliminé par lavage à l'eau. Le crésol qui n'a pas réagi est séparé par une solution aqueuse de soude caustique. On récupère ainsi 21,7 g de m-crésol. La solu- tion éthérée est séchée avec du sulfate de sodium puis concentrée par distil- lation de l'éther et du méthanol. Enfin, le résidu est distillé sous vide.
EMI1.3
On obtient, finalement 45 g de d1méthy1carbamate de m-tolyle dont le point d'ébullition est de 88-90 C sous 0,15 mm Hg. Le rendement est de 50,3% sur le chlorure de diméthylcarbamyle et de 84% sur le m-crésol en tenant compte de la substance récupérée.
EMI1.4
-ohéj;vle EXAmD1A 2. Préparation dA Morpholinecarboxylate aA 2.Z-dlchloro- phényle
Un mélange de 27,2 g de 2,4-dichlorophénol (0,167 mole), de 25 g
<Desc/Clms Page number 2>
EMI2.1
de chlorure de l'acide morpho1ine=-carboxy1ique (0,167 mole) et de 9,3 g de potasse caustique (0,167 mole) dans 100 cm3 d'éther est chauffé à reflux pen- dant 4 heures. Le produit de réaction est traité de la même manière que dans
EMI2.2
l'exemple 1. On obtient 30, g de morpholinecarboxylate de 2,-4-dichlorophé- nyle (Pt Fusion 61-62 C) .
Le rendement est de 66,6% sans tenir compte du 2,4-dichlorophénol récupéré.
Exemple 3. Prépa-ration de divers dialcovicarbamates de '9pényJ-e.
Les produits suivants ont été préparés selon les méthodes des exemples 1 et 2 :
EMI2.3
Déthy1carbamate de phényle (Pt Fusion 45 C) D11néthy1carbamate d'o-tolyle (Pt Ebull. lls-l17 C/G,3 mm Hg) Diméthylcarbamate de p-tolyle (Pt Fusion 50-53 C) Dunéthylcarbamate de p-chlorophényle (Pt Ebull. 950C/0,05 mm Hg) Diméthylcarbamate de p-nitrophényle (Pt Fusion 104-106 C) Diméthylcarbamate de 3,5-diméthylphényle (Pt Fusion 43-54 C)
EMI2.4
Diméthylcarbamate de 2-méthyl-4-chlorophényle (Pt Ebull. 100-1070C/0,1 mm Hg) Diméthylcarbamate de 3-méthyl-4-chlorophényle (Pt Fusion 33 C) Diméthylcarbamate de 2,4-dichlorcphényle (Pt bulla 86-90OC/0,1 mm Hg) DJ.Inéthy1.carbamate de 3, 5-éthy.-:
ch.orophénye (Pt Fusion 106 C) Diméthylcarbamate de 2, ., 5-trichlorophényle (Pt Fusion 41 0) Diéthylcarbamate de p-chlorophényle (Pt Ebull. 850C/0,05 mm Hg) Diéthylcarbamate de 3-méthyl-4-chlorophényle -Pt Ebu2:L. llG-12G C/G,2 mm Hg) Diéthylcarbamate de 2,4,5-trïchlorophëny.e (Pt Ebull. 155 C/0,6 mm Hg) Morpholinecarboxylate de phényle (Pt Fusion 36 C) Morpholinecarboxylate de p-crésyle (Pt Fusion 89-90 C) Morpholinecarboxylate de p-chlorophényle (Pt Fusion 80 C) Morpholinecarboxylate de 2,4,5-trichlorophényle (Pt Fusion 90 C)
EMI2.5
Exemple A. Action du diméthvicapbamate de D-ch;.oroDhénv1.e. (1-1étooqe A).
Des graines d'avoine, de betterave,de chicorée, de froment,de lin, de luzerne, de mâche, de pâquerette et de radis ont été semées dans du terreau contenu dans des bacs de 600 cm2 de surface. Les bacs ont été ar- rosés avec 20 cm3 d'une solution de 1 g de diméthylcarbamate de p-chlorophé- nyle dans 100 cm3 d'alcool éthylique à 95% (ce qui correspond à 33 kg par hectare). Des essais préalables avaient montré que 1'alcool éthylique à 95% n'avait aucun effet toxique sur les plantes étudiées.
Pendant les deux premières semaines après le traitement, un retard de la germination vis-à-vis des témoins a été observé chez les radis et les mâches et une réduction du pourcentage de germination chez la chicorée et le froment. Après trois semaines, les jeunes pousses présentaient l'aspect sui- vant : avoine : jaunissement et flétrissement betterave . destruction partielle chicorée : destruction partielle froment : aucune action lin : attaque partielle
<Desc/Clms Page number 3>
EMI3.1
i'.:E3' :le ..#'..;tI"c'ùo-' iJélrtu'..Í.J..'3 r.;?che éi;;c.A,i<1. action pâquerette : ducunp action rdcbs Je str',-lC t:J.ù"1 avec iuj9 concentration deux fois plus faible en carbamate on observe des effets mons pro "10 ne es Jjeemole 5. ,,c i éo i,¯ du due 1 (Méthode A).
EMI3.2
Des graines de froment, de betterave,, de lin, de luzerne et de radis ont été semées ct trz.1Lées de la même façon que dans l'exemple 4 avec lJ.:1f> solUt:I.O:l é l.L,'3.YlolJ..quE-' 1% de morpholinecarboxylate de 2,,.-dichlorophényle.
Cr a observé les effets suivants : betterave: :J.UCtU:l 1ût..J:1 après 4 semaines froment : destruction complète après 1 semaine lin : auc .!ne action après 4 semaines luzerne : aucune action après 4 semaines
EMI3.3
radis : f ¯. ":"c; réCJac t1.cn de germ1.11a t; 011 après 2 semaines .:. -.) LI' la 'ror,ie:ïv9 le même effet a été constate après l'application u'<'1e=' dose ,19;:?1 1')1:' plus faible.
Il en J..é5J.l1,e que le morpholinecarboxylaie de 2>4-dlchlorophényle possède un pouvoir phytotoxique sélectif très marqué. exemple n- Action du Üj.é}; 1T1c;(arùamltEJ de 1;?:-ch..(.oroDI.1énv le (Méthode B). sur deux feuilles de diverses plantes,!) on dépose environ 40 gout- tes de G9ûûé Ci;'3 d'une emulsion à 1% dont la formulation est la suivante :
D.Lé1,:'1y.Lcaru#n::':l.e de p-chlorophényle : 1 partie en poids Solvant ,,.pâtâ léger 5 parties jÜco:{lp':LE3nolpol.féL,hylJneglycol : 0 JI ,1 la: :93,5 "
Les plantes suivantes unt été utilisées dans ce test : haricots ceux-ci sont détruits en deux semaines par le produite l'action
EMI3.4
cécrosante s-érendant des parties traitées des feuilles à toute la surface, puis aux pétioles de ces feuillus et enfin à la tige de la plante. maïs :destruction en 5 jours navets : les feuilles traitées se dessèchent complètement mais la plante re- prend son développement par formation de nouvelles feuilles. tomates :
en plus de l'effet constaté chez les navets, on note un retard de croissance de la. plante pouvant atteindre la moitié de la croissance des té- moins.
EMI3.5
;]'1 cancluson9 le produit étudié possède une forte action phyto- toxique qui peut ët-re télétoxique pour les haricots, Le mais et les tomates.
::";Dl "c Ac h 0"', eL. dlét:wJ..pa1?ate L..o i;-tr1chlorQphénvle .fHéthone 1})
Les effets observés après l'application du produite selcr, la mé- thode décrite dans l'exemple précédente sont les suivants : haracots : ces plantes sont assez sensibles au produit, accusant des nécroses de toute la surface des feuilles ainsi qu'un retard de croissance, mais elles ne sont pas détruites.
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mais : ces plantes sont tuées en 3 jours. navets : les feuilles traitées sont complètement desséchées après 9 jours.
On observe un retard de croissance par rapport aux plantes non traitées, mais la formation de nouvelles feuilles fait reprendre à la plante son développement normal. tomates : ces plantes réagissent au traitement de la même façon que les na- vets.
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The present invention relates to the manufacture of phenyl carbamates corresponding to the general formula
EMI1.1
in which
R is a hydrogen or halogen atom or a lower aliphatic radical or a nitro radical;
R 'is a hydrogen or halogen atom;
R "is a lower aliphatic radical, the two radicals R" can be linked together by an oxygen bridge so as to form a morpholine; n is an integer between 1 and 3.
These compounds possess selective herbicidal properties, that is to say they destroy certain plants and leave others practically unaltered.
Phenyl carbamates are prepared by various methods. For example, carbamyl halides can be treated with a phenol or a substituted alkali phenolate. A secondary aliphatic amine or morpholine can also be reacted with a substituted phenyl chloroformate or with a substituted diphenyl carbonate.
Various methods are used to determine the herbicidal properties of the products in question. In all cases, the first step is to prepare a solution of the product in a solvent which has no herbicidal action on the plant under test. The tests applied are defined as follows:
Method A. Seeds sown in potting soil are sprayed with a solution of the product studied.
Method B. A number of drops of this solution are applied to specific places on a plant. This method gives the same results as spraying on developed plants; it also makes it possible to distinguish between contact herbicides which only cause necrosis in the treated areas and teletoxic herbicides which destroy the entire plant.
EMI1.2
Example 1, preparation of, of m-to1vle.
A mixture of 54 g of m-cresol (0.5 mol) and 53.8 g of dimethylcarbamyl chloride (0.5 mol) in 100 cm3 of ether is treated with a concentrated methanol solution of 28 g of potassium hydroxide. caustic (0.5mole). The exothermic reaction is terminated by heating under reflux for about an hour. After cooling, the potassium chloride formed is removed by washing with water. The cresol which has not reacted is separated by an aqueous solution of caustic soda. 21.7 g of m-cresol are thus recovered. The ethereal solution is dried with sodium sulfate and then concentrated by distillation of ether and methanol. Finally, the residue is distilled under vacuum.
EMI1.3
Finally, 45 g of m-tolyl d1methylcarbamate are obtained, the boiling point of which is 88-90 C at 0.15 mm Hg. The yield is 50.3% on dimethylcarbamyl chloride and 84% on m-cresol taking into account the recovered substance.
EMI1.4
-ohéj; vle EXAmD1A 2. Preparation of Morpholinecarboxylate aA 2.Z-dlchlorophenyl
A mixture of 27.2 g of 2,4-dichlorophenol (0.167 mol), 25 g
<Desc / Clms Page number 2>
EMI2.1
of morpho1ine = -carboxylic acid chloride (0.167 mol) and 9.3 g of caustic potassium (0.167 mol) in 100 cm3 of ether is refluxed for 4 hours. The reaction product is processed in the same way as in
EMI2.2
Example 1. 30 g of 2, -4-dichlorophenyl morpholinecarboxylate (Pt Fusion 61-62 C) are obtained.
The yield is 66.6% without taking into account the 2,4-dichlorophenol recovered.
Example 3. Preparation of various dialkovicarbamates of '9penyJ-e.
The following products were prepared according to the methods of Examples 1 and 2:
EMI2.3
Phenyl methylcarbamate (Pt Fusion 45 C) O-tolyl D11ethylcarbamate (Pt Ebull. Lls-l17 C / G, 3 mm Hg) p-tolyl dimethylcarbamate (Pt Fusion 50-53 C) p-chlorophenyl dunethylcarbamate (Pt Ebull. 950C / 0.05 mm Hg) p-nitrophenyl dimethylcarbamate (Pt Fusion 104-106 C) 3,5-dimethylphenyl dimethylcarbamate (Pt Fusion 43-54 C)
EMI2.4
2-Methyl-4-chlorophenyl dimethylcarbamate (Pt Ebull. 100-1070C / 0.1 mm Hg) 3-methyl-4-chlorophenyl dimethylcarbamate (Pt Fusion 33 C) 2,4-dichlorcphenyl dimethylcarbamate (Pt bulla 86- 90OC / 0.1 mm Hg) DJ.Inéthy1.carbamate de 3, 5-éthy.-:
ch.orophénye (Pt Fusion 106 C) 2,., 5-trichlorophenyl dimethylcarbamate (Pt Fusion 41 0) p-chlorophenyl diethylcarbamate (Pt Ebull. 850C / 0.05 mm Hg) 3-methyl-4-chlorophenyl diethylcarbamate -Pt Ebu2: L. llG-12G C / G, 2 mm Hg) 2,4,5-trichlorophëny.e diethylcarbamate (Pt Ebull. 155 C / 0.6 mm Hg) Phenyl morpholinecarboxylate (Pt Fusion 36 C) p-cresyl morpholinecarboxylate ( Pt Fusion 89-90 C) p-Chlorophenyl morpholinecarboxylate (Pt Fusion 80 C) 2,4,5-trichlorophenyl morpholinecarboxylate (Pt Fusion 90 C)
EMI2.5
Example A. Action of D-ch dimethvicapbamate; .oroDhénv1.e. (1-1 etooqe A).
Oat, beet, chicory, wheat, flax, alfalfa, lamb's lettuce, daisy and radish seeds were sown in potting soil contained in 600 cm2 surface tubs. The tanks were sprayed with 20 cm3 of a solution of 1 g of p-chlorophenyl dimethylcarbamate in 100 cm3 of 95% ethyl alcohol (which corresponds to 33 kg per hectare). Prior tests had shown that 95% ethyl alcohol had no toxic effect on the plants studied.
During the first two weeks after treatment, a retardation of germination vis-à-vis controls was observed in radishes and chews and a reduction in the percentage of germination in chicory and wheat. After three weeks, the young shoots looked as follows: oats: yellowing and wilting beetroot. partial destruction of chicory: partial destruction of wheat: no action flax: partial attack
<Desc / Clms Page number 3>
EMI3.1
i '.: E3': the .. # '..; tI "c'ùo-' iJélrtu '.. Í.J ..' 3 r.;? che éi ;; cA, i <1. daisy action: ducunp action rdcbs Je str ', - lC t: J.ù "1 with iuj9 concentration twice lower in carbamate we observe effects mons pro" 10 ne es Jjeemole 5. ,, ci éo i, ¯ of due 1 (Method AT).
EMI3.2
Wheat, beet, linseed, alfalfa and radish seeds were sown next to them. 1 Seed in the same way as in example 4 with lJ.:1f> solUt: IO: l é lL, '3 .YlolJ..quE- '1% 2'-dichlorophenyl morpholinecarboxylate.
Cr observed the following effects: beet:: J.UCtU: l 1ut..D: 1 after 4 weeks wheat: complete destruction after 1 week lin: no action after 4 weeks alfalfa: no action after 4 weeks
EMI3.3
radish: f ¯. ":"vs; reCJac t1.cn of germ1.11a t; 011 after 2 weeks.:. -.) LI 'la' ror, ie: ïv9 the same effect was observed after application u '<' 1e = 'dose, 19;:? 1 1') 1: 'lower.
It in J..é5J.l1, e that the morpholinecarboxylaie of 2> 4-dlchlorophenyl has a very marked selective phytotoxic power. example n- Action of Üj.é}; 1T1c; (arùamltEJ of 1;?: - ch .. (. OroDI.1énv le (Method B). On two leaves of various plants ,!) about 40 drops of G9ûûé Ci; '3 of an emulsion are deposited at 1%, the formulation of which is as follows:
D.Lé1,: '1y.Lcaru # n ::': the p-chlorophenyl: 1 part by weight Solvent ,,. Light pate 5 parts jÜco: {lp ': LE3nolpol.féL, hylJneglycol: 0 JI, 1 la :: 93.5 "
The following plants were used in this test: beans these are destroyed in two weeks by the produced action
EMI3.4
cecrotising spreading from the treated parts of the leaves to the entire surface, then to the petioles of these deciduous trees and finally to the stem of the plant. corn: destruction in 5 days turnips: the treated leaves dry out completely but the plant resumes its development by formation of new leaves. tomatoes:
in addition to the effect observed in turnips, there is a growth retardation of the. plant up to half of the growth of controls.
EMI3.5
;] '1 cancluson9 the studied product has a strong phytotoxic action which can be teletoxic for beans, corn and tomatoes.
:: "; Dl" c Ac h 0 "', eL. Dlét: wJ..pa1? Ate L..o i; -tr1chlorQphénvle .fHéthone 1})
The effects observed after the application of the product selcr, the method described in the preceding example are as follows: haracots: these plants are quite sensitive to the product, showing necrosis of the entire surface of the leaves as well as a delay in growth, but they are not destroyed.
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but: these plants are killed in 3 days. turnips: the treated leaves are completely dried out after 9 days.
Growth retardation is observed compared to untreated plants, but the formation of new leaves causes the plant to resume normal development. tomatoes: these plants react to the treatment in the same way as the tubs.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1160842B (en) * | 1960-10-06 | 1964-01-09 | Upjohn Co | Process for the preparation of 2-halogen and 2,4-dihalo-alkylphenyl carbamates |
-
0
- BE BE532057D patent/BE532057A/fr unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1160842B (en) * | 1960-10-06 | 1964-01-09 | Upjohn Co | Process for the preparation of 2-halogen and 2,4-dihalo-alkylphenyl carbamates |
US3402245A (en) * | 1960-10-06 | 1968-09-17 | Upjohn Co | Insecticidal 2-halo- and 2, 4-dihaloalkylphenyl carbamate compositions and method for controlling insects |
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