SU655306A3 - Method of obtaining esters of carbanilic acid - Google Patents
Method of obtaining esters of carbanilic acidInfo
- Publication number
- SU655306A3 SU655306A3 SU772473626A SU2473626A SU655306A3 SU 655306 A3 SU655306 A3 SU 655306A3 SU 772473626 A SU772473626 A SU 772473626A SU 2473626 A SU2473626 A SU 2473626A SU 655306 A3 SU655306 A3 SU 655306A3
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- general formula
- esters
- acid
- carbanilic acid
- obtaining esters
- Prior art date
Links
- 150000002148 esters Chemical class 0.000 title claims description 7
- 238000000034 method Methods 0.000 title description 3
- PWXJULSLLONQHY-UHFFFAOYSA-N phenylcarbamic acid Chemical compound OC(=O)NC1=CC=CC=C1 PWXJULSLLONQHY-UHFFFAOYSA-N 0.000 title description 2
- 238000002360 preparation method Methods 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 3
- 229910052801 chlorine Chemical group 0.000 claims description 2
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 2
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 2
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 2
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 125000000304 alkynyl group Chemical group 0.000 claims 1
- 150000001733 carboxylic acid esters Chemical class 0.000 claims 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims 1
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 9
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- -1 Isopropyl ester Chemical class 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- LOYXEARIHRYZDG-UHFFFAOYSA-N (3-cyanophenyl)carbamic acid Chemical compound OC(=O)NC1=CC=CC(C#N)=C1 LOYXEARIHRYZDG-UHFFFAOYSA-N 0.000 description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- NJXPYZHXZZCTNI-UHFFFAOYSA-N 3-aminobenzonitrile Chemical compound NC1=CC=CC(C#N)=C1 NJXPYZHXZZCTNI-UHFFFAOYSA-N 0.000 description 1
- NZHPVPMRNASEQK-UHFFFAOYSA-N 3-isocyanatobenzonitrile Chemical compound O=C=NC1=CC=CC(C#N)=C1 NZHPVPMRNASEQK-UHFFFAOYSA-N 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- XCIXKGXIYUWCLL-UHFFFAOYSA-N cyclopentanol Chemical compound OC1CCCC1 XCIXKGXIYUWCLL-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002363 herbicidal effect Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- IVRIRQXJSNCSPQ-UHFFFAOYSA-N propan-2-yl carbonochloridate Chemical compound CC(C)OC(Cl)=O IVRIRQXJSNCSPQ-UHFFFAOYSA-N 0.000 description 1
- KATIPCFVEKPTIW-UHFFFAOYSA-N propyl n-(3-chlorophenyl)carbamate Chemical compound CCCOC(=O)NC1=CC=CC(Cl)=C1 KATIPCFVEKPTIW-UHFFFAOYSA-N 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- 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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/56—1,2-Diazoles; Hydrogenated 1,2-diazoles
-
- 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
-
- 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
- A01N53/00—Biocides, pest repellants or attractants, or plant growth regulators containing cyclopropane carboxylic acids or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C271/00—Derivatives of carbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
- C07C271/06—Esters of carbamic acids
- C07C271/08—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms
- C07C271/26—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atom of at least one of the carbamate groups bound to a carbon atom of a six-membered aromatic ring
- C07C271/28—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atom of at least one of the carbamate groups bound to a carbon atom of a six-membered aromatic ring to a carbon atom of a non-condensed six-membered aromatic ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C271/00—Derivatives of carbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
- C07C271/06—Esters of carbamic acids
- C07C271/32—Esters of carbamic acids having oxygen atoms of carbamate groups bound to carbon atoms of rings other than six-membered aromatic rings
- C07C271/38—Esters of carbamic acids having oxygen atoms of carbamate groups bound to carbon atoms of rings other than six-membered aromatic rings with the nitrogen atom of at least one of the carbamate groups bound to a carbon atom of a six-membered aromatic ring
-
- 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
- A01N2300/00—Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Agronomy & Crop Science (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (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)
Description
(54) СПОСОБ ПОЛУЧЕНИЯ ЭФИРОВ КАРБАНИЛОВОй КИСЛОТЫ(54) METHOD FOR PRODUCING CARBANIC ACID ESTERS
Изобретение относитс к способу получени новых эфиров карбаниловой кислоты, обладающих гербицидной активностью . Известно получение, например, из пропилового эфира 3-хлоркарбанилово кислоты, заключающийс в том, что галоидбензоамин подвергают взаимоде ствию с соответствующим сложным эфи ром хлормуравьиной кислоты 1. Применение известной реакции поз вол ет получить новые соединени , . которые по сравнению с известными обладают лучшей селективностью и более высокой активностью. Поставленна цель достигаетс сп собом получени эфиров карбаниловой кислоты общей формулы Ю1-Со-оа где R - алкил-Cj-Cg, циклоалкил-С -С алкенил-С, ,, алкинил-С, -С , X - метил-, метоксигруппа или атом хлора; п О или 1 , отличающийс тем, что 3-аминобензонитрилы общей формулы ТНг где.X и п имеютГ вышеуказанные значени , подвергают взаимодействию со сложными эфирами хлормуравьиной кислоты общей формулы СИ-CO-OR, где R имеет вышеуказанные значени , в органическом или водноорганическом растворителе в присутствии акцептора зшорводорода при 20-40 С. Полученные соединени хорошо раствор ютс в этиловом эфире уксусной кислоты, ацетоне, этиловом спирте, но незначительно раствор ютс в бензоле и практически не раствор ютс в насыщенных углеводородах. Приведенные ниже примеры по сн ют способ получени соответствующих изобретению соединений. Пример. Изопропиловый эфир 3-цианокарбаниловой кислоты. Смесь, состо щую из 11,8 г (0,1 моль) 3-аминобензонитрила,140 мл этилового эфира уксусной кислоты, 90 МП воды и 2,5 г (0,063 моль) окиси магни ,при перемешивании смешивают по капл м с 13,5 г (0,11 моль) изопропилового эфира хлормуравьиной кислоты. Реакционную массу выдерживают в течение 3,ч при комнатной температуре, затем водную фазу подкисл ют .разбавленной сол ной кислотой и органический раствор промывают водой до нейтральной реакции промывных вод. Этилацетатную фазу отдел ют сушат над сернокислым магнием, фильт руют, после чего раствор упаривают досуха на роторном испарителе. Полученный неочищенный продукт перекристаллизовьшают из смеси этилового эфи ра уксусной кислоты и гексана. Выход 15,3 г (75%от теоретически рассчита него значени ); т.пл. 94-96°С Циклопентиловый эфир 3-цианокарбаниловой кислоты. К смеси 4,3 г (0,05 моль) циклопентилового спирта и 0,1 мл триэтиламина в 50 мл диэтилового эфира при перемешивании прибавл ют по капл м раствор 7,2 г (0,05 моль) 3-цианофенилизоцианата в 50 мл диэтилового эфира. Реакционный раствор нагревает до температуры примерно . С целью завершени реакции реакционную массу выдерживают в течение 5 ч при комнатной температуре. Затем производ т отгонку растворител на роторном испарителе и полученный остаток перекристаллизовывают из смеси метилового спирта и воды. Выход 9,3 г (81% от теории) ; т.пл. 101-102с. Аналогично получены и другие соединени , представленные в таблице .The present invention relates to a process for the preparation of new esters of carbanilic acid having herbicidal activity. It is known to obtain, for example, from 3-chlorocarbanilic acid propyl ester, which consists in the fact that halobenzoamine is reacted with the corresponding chloroformic ester 1. The application of the known reaction allows obtaining new compounds,. which in comparison with the known have better selectivity and higher activity. The goal is to achieve the preparation of esters of vannilic acid of the general formula Yu1-Co-oa where R is alkyl-Cj-Cg, cycloalkyl-C-C alkenyl-C, ,, alkynyl-C, -C, X - methyl-, methoxy group or chlorine atom; A p or 1, characterized in that the 3-aminobenzonitriles of the general formula TNg, where X and n have the above values, are reacted with chloroformic esters of the general formula SI-CO-OR, where R has the above values, in an organic or aqueous organic solvent in the presence of a hydrogen chloride acceptor at 20-40 ° C. The compounds obtained are well soluble in ethyl acetate, acetone, ethyl alcohol, but slightly soluble in benzene and practically not soluble in saturated hydrocarbons. The examples below explain the process for the preparation of the compounds according to the invention. Example. Isopropyl ester of 3-cyanocarbanilic acid. A mixture of 11.8 g (0.1 mol) of 3-aminobenzonitrile, 140 ml of ethyl acetate, 90 MP of water, and 2.5 g (0.063 mol) of magnesium oxide is mixed with stirring, 13, 5 g (0.11 mol) of isopropyl chloroformate The reaction mass is kept for 3 hours at room temperature, then the aqueous phase is acidified with diluted hydrochloric acid and the organic solution is washed with water until neutral wash water. The ethyl acetate phase is dried over magnesium sulfate, filtered, and the solution is evaporated to dryness on a rotary evaporator. The crude product obtained is recrystallized from a mixture of ethyl acetic acid ester and hexane. Yield 15.3 g (75% of theoretically calculated value); m.p. 94-96 ° C Cyclopentyl ester of 3-cyanocarbanilic acid. To a mixture of 4.3 g (0.05 mol) of cyclopentyl alcohol and 0.1 ml of triethylamine in 50 ml of diethyl ether, a solution of 7.2 g (0.05 mol) of 3-cyanophenyl isocyanate in 50 ml of diethyl alcohol is added dropwise with stirring. the ether. The reaction solution heats to a temperature of about. In order to complete the reaction, the reaction mass is kept for 5 hours at room temperature. The solvent is then distilled off on a rotary evaporator and the resulting residue is recrystallized from a mixture of methyl alcohol and water. Yield 9.3 g (81% of theory); m.p. 101-102s. Other compounds shown in the table are similarly prepared.
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Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762619733 DE2619733A1 (en) | 1976-04-30 | 1976-04-30 | CARBANILIC ACID ESTERS, PROCESS FOR PREPARING THESE COMPOUNDS AND THE HERBICIDAL AGENTS CONTAINING THESE AGENTS |
Publications (1)
Publication Number | Publication Date |
---|---|
SU655306A3 true SU655306A3 (en) | 1979-03-30 |
Family
ID=5977066
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU772455512A SU652861A3 (en) | 1976-04-30 | 1977-03-01 | Herbicide |
SU772473626A SU655306A3 (en) | 1976-04-30 | 1977-04-25 | Method of obtaining esters of carbanilic acid |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU772455512A SU652861A3 (en) | 1976-04-30 | 1977-03-01 | Herbicide |
Country Status (30)
Country | Link |
---|---|
JP (1) | JPS52133946A (en) |
AR (1) | AR218245A1 (en) |
AT (1) | AT353549B (en) |
AU (1) | AU2436577A (en) |
BE (1) | BE854128A (en) |
BG (1) | BG27715A3 (en) |
BR (1) | BR7702183A (en) |
CA (1) | CA1100987A (en) |
CS (1) | CS200510B2 (en) |
DD (1) | DD129732A5 (en) |
DE (1) | DE2619733A1 (en) |
EG (1) | EG12533A (en) |
ES (1) | ES456423A1 (en) |
FI (1) | FI771019A (en) |
FR (1) | FR2349571A1 (en) |
GB (1) | GB1582302A (en) |
GR (1) | GR70655B (en) |
IE (1) | IE44682B1 (en) |
IL (1) | IL51971A0 (en) |
IN (1) | IN155907B (en) |
IT (1) | IT1075842B (en) |
LU (1) | LU77225A1 (en) |
NL (1) | NL7701416A (en) |
NZ (1) | NZ183795A (en) |
PL (1) | PL102202B1 (en) |
PT (1) | PT66319B (en) |
RO (1) | RO72522A (en) |
SE (1) | SE7704519L (en) |
SU (2) | SU652861A3 (en) |
ZA (1) | ZA772586B (en) |
-
1976
- 1976-04-30 DE DE19762619733 patent/DE2619733A1/en not_active Withdrawn
-
1977
- 1977-02-10 NL NL7701416A patent/NL7701416A/en not_active Application Discontinuation
- 1977-03-01 ES ES456423A patent/ES456423A1/en not_active Expired
- 1977-03-01 SU SU772455512A patent/SU652861A3/en active
- 1977-03-15 CS CS771718A patent/CS200510B2/en unknown
- 1977-03-17 PT PT66319A patent/PT66319B/en unknown
- 1977-03-25 AR AR266999A patent/AR218245A1/en active
- 1977-03-30 RO RO7789860A patent/RO72522A/en unknown
- 1977-04-01 FI FI771019A patent/FI771019A/fi not_active Application Discontinuation
- 1977-04-01 IN IN493/CAL/77A patent/IN155907B/en unknown
- 1977-04-05 NZ NZ183795A patent/NZ183795A/en unknown
- 1977-04-06 BG BG7735930A patent/BG27715A3/en unknown
- 1977-04-06 BR BR7702183A patent/BR7702183A/en unknown
- 1977-04-14 CA CA276,170A patent/CA1100987A/en not_active Expired
- 1977-04-18 AU AU24365/77A patent/AU2436577A/en not_active Expired
- 1977-04-20 SE SE7704519A patent/SE7704519L/en unknown
- 1977-04-25 GB GB17085/77A patent/GB1582302A/en not_active Expired
- 1977-04-25 SU SU772473626A patent/SU655306A3/en active
- 1977-04-26 EG EG243/77A patent/EG12533A/en active
- 1977-04-27 IE IE849/77A patent/IE44682B1/en unknown
- 1977-04-28 PL PL1977197702A patent/PL102202B1/en unknown
- 1977-04-28 JP JP4978177A patent/JPS52133946A/en active Pending
- 1977-04-28 DD DD7700198641A patent/DD129732A5/en unknown
- 1977-04-28 IT IT22909/77A patent/IT1075842B/en active
- 1977-04-28 LU LU77225A patent/LU77225A1/xx unknown
- 1977-04-29 IL IL51971A patent/IL51971A0/en unknown
- 1977-04-29 GR GR53331A patent/GR70655B/el unknown
- 1977-04-29 ZA ZA00772586A patent/ZA772586B/en unknown
- 1977-04-29 BE BE177153A patent/BE854128A/en unknown
- 1977-04-29 AT AT305977A patent/AT353549B/en not_active IP Right Cessation
- 1977-05-02 FR FR7713169A patent/FR2349571A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
PL197702A1 (en) | 1978-01-02 |
BR7702183A (en) | 1977-12-20 |
RO72522A (en) | 1982-09-09 |
ZA772586B (en) | 1978-03-29 |
PL102202B1 (en) | 1979-03-31 |
AR218245A1 (en) | 1980-05-30 |
BG27715A3 (en) | 1979-12-12 |
PT66319B (en) | 1978-08-14 |
IE44682B1 (en) | 1982-02-24 |
PT66319A (en) | 1977-04-01 |
GB1582302A (en) | 1981-01-07 |
IE44682L (en) | 1977-10-30 |
GR70655B (en) | 1982-12-03 |
IN155907B (en) | 1985-03-23 |
NZ183795A (en) | 1978-11-13 |
LU77225A1 (en) | 1977-08-18 |
NL7701416A (en) | 1977-11-01 |
SU652861A3 (en) | 1979-03-15 |
JPS52133946A (en) | 1977-11-09 |
CS200510B2 (en) | 1980-09-15 |
FR2349571A1 (en) | 1977-11-25 |
FI771019A (en) | 1977-10-31 |
ES456423A1 (en) | 1978-02-01 |
IT1075842B (en) | 1985-04-22 |
AU2436577A (en) | 1978-10-26 |
IL51971A0 (en) | 1977-06-30 |
AT353549B (en) | 1979-11-26 |
CA1100987A (en) | 1981-05-12 |
SE7704519L (en) | 1977-10-31 |
EG12533A (en) | 1979-06-30 |
ATA305977A (en) | 1979-04-15 |
BE854128A (en) | 1977-10-31 |
DD129732A5 (en) | 1978-02-08 |
DE2619733A1 (en) | 1977-11-17 |
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