ES2139951T3 - Procedimiento de preparacion de 2,6-difluorobenzonitrilo en ausencia de disolvente. - Google Patents

Procedimiento de preparacion de 2,6-difluorobenzonitrilo en ausencia de disolvente.

Info

Publication number
ES2139951T3
ES2139951T3 ES95940030T ES95940030T ES2139951T3 ES 2139951 T3 ES2139951 T3 ES 2139951T3 ES 95940030 T ES95940030 T ES 95940030T ES 95940030 T ES95940030 T ES 95940030T ES 2139951 T3 ES2139951 T3 ES 2139951T3
Authority
ES
Spain
Prior art keywords
difluorobenzonitrile
absence
solvent
procedure
tetrasustituted
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES95940030T
Other languages
English (en)
Inventor
Mark W Zettler
Richard E Tobey
Ronald B Leng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Corteva Agriscience LLC
Original Assignee
Dow AgroSciences LLC
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
Application filed by Dow AgroSciences LLC filed Critical Dow AgroSciences LLC
Application granted granted Critical
Publication of ES2139951T3 publication Critical patent/ES2139951T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C253/00—Preparation of carboxylic acid nitriles
    • C07C253/30—Preparation of carboxylic acid nitriles by reactions not involving the formation of cyano groups

Abstract

UN PROCEDIMIENTO DE OBTENCION DE 2,6 - DIFLUOROBENZONITRILO QUE CONSISTE EN HACER REACCIONAR 2,6 - DICLOROBENZONITRILO CON UN FLUORURO DE METAL BASICAMENTE ANHIDRO A UNA TEMPERATURA ENTRE APROX. 160 (GRADOS) C Y APROX. 300 (GRADOS) C Y EN PRESENCIA DE UN CATALIZADOR DE TRANSFERENCIA DE FASE, QUE ES TIPICAMENTE UN POLIETER, UNA SAL DE FOSFONIO TETRASUSTITUIDA, UNA SAL DE AMONIO TETRASUSTITUIDA Y UN CRIPTANDO, PERO EN AUSENCIA DE DISOLVENTE. TRAS RETIRAR EL PRODUCTO, LA MEZCLA RESULTANTE PUEDE SER RECICLADA EN EL REACTOR PARA EL SIGUIENTE CICLO DE REACCION. LA INVENCION COMPRENDE ASIMISMO, PARA EL CASO DE APARICION DE ALQUITRANES DURANTE EL PROCESO DE REACCION, LA SEPARACION DEL CATALIZADOR DE DICHOS ALQUITRANES Y EL RECICLAJE DEL MISMO.
ES95940030T 1994-12-28 1995-11-17 Procedimiento de preparacion de 2,6-difluorobenzonitrilo en ausencia de disolvente. Expired - Lifetime ES2139951T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/365,726 US5502235A (en) 1994-12-28 1994-12-28 Solventless process for making 2,6 difluorobenzonitrile

Publications (1)

Publication Number Publication Date
ES2139951T3 true ES2139951T3 (es) 2000-02-16

Family

ID=23440092

Family Applications (1)

Application Number Title Priority Date Filing Date
ES95940030T Expired - Lifetime ES2139951T3 (es) 1994-12-28 1995-11-17 Procedimiento de preparacion de 2,6-difluorobenzonitrilo en ausencia de disolvente.

Country Status (18)

Country Link
US (1) US5502235A (es)
EP (1) EP0800506B1 (es)
JP (1) JPH10511941A (es)
CN (1) CN1174546A (es)
AR (1) AR000556A1 (es)
AT (1) ATE187959T1 (es)
AU (1) AU702641B2 (es)
BR (1) BR9510428A (es)
CA (1) CA2209141A1 (es)
DE (1) DE69514122T2 (es)
DK (1) DK0800506T3 (es)
ES (1) ES2139951T3 (es)
FI (1) FI972742A (es)
HU (1) HU215936B (es)
IL (1) IL116634A (es)
TW (1) TW307748B (es)
WO (1) WO1996020168A1 (es)
ZA (1) ZA9510902B (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0847977B1 (en) * 1995-06-20 2001-08-29 Nippon Soda Co., Ltd. 2,3-dihalogeno-6-trifluoromethylbenzene derivatives and process for producing the same
DE19702282C2 (de) * 1997-01-23 1998-11-19 Hoechst Ag Katalysator für Halex-Reaktionen
AU2002304483A1 (en) * 2001-05-17 2002-11-25 Rhodia Chimie Use of a composition of an ionic nature as a substrate reagent, a composition constituting a fluorination reagent and a method using same
DE10227223A1 (de) * 2002-06-18 2004-01-08 Kühlein, Klaus, Prof.Dr. Verfahren zur Herstellung substituierter organischer Verbindungen und Verwendung von Katalysatoren für Substitutionsreaktionen
CN103044388B (zh) * 2011-10-17 2015-04-15 张家港市国泰华荣化工新材料有限公司 一种3,4—二氟环丁砜的制备方法
CN104387289B (zh) * 2014-10-30 2017-09-01 天津河清化学工业有限公司 二氟苯腈生产中降低催化剂用量的方法
CN112939782B (zh) * 2019-12-11 2022-09-30 兰州康鹏威耳化工有限公司 一种含氟芳基化合物的制备方法
CN113024414A (zh) * 2021-03-23 2021-06-25 江苏合泰新材料科技有限公司 一种高效合成含氟化合物的方法

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GB995927A (en) * 1962-10-23 1965-06-23 Imp Smelting Corp Ltd Fluorination of perhalo compounds
NL302228A (es) * 1962-12-20
NL129620C (es) * 1963-04-01
US4051168A (en) * 1976-05-12 1977-09-27 E. I. Du Pont De Nemours And Company Fluorination process
US4229365A (en) * 1977-05-28 1980-10-21 Basf Aktiengesellschaft Manufacture of substituted fluorobenzenes
DE2803259A1 (de) * 1978-01-26 1979-08-02 Basf Ag Verfahren zur herstellung von fluorbenzolen
DE2902877C2 (de) * 1978-01-28 1983-05-05 I.S.C. Chemicals Ltd., London Verfahren zur Herstellung eines Fluorbenzomononitrils
DE2938939A1 (de) * 1978-10-05 1980-04-17 Boots Co Ltd Verfahren zur herstellung von fluornitrobenzolen
US4174349A (en) * 1978-10-30 1979-11-13 Allied Chemical Corporation Preparation of fluoroorganic compounds with calcium fluoride
FR2490634A1 (fr) * 1980-09-25 1982-03-26 Rhone Poulenc Ind Procede de preparation de fluorobenzonitriles
JPS57197226A (en) * 1981-05-30 1982-12-03 Dainippon Ink & Chem Inc Preparation of aromatic fluorine compound
EP0073372B1 (en) * 1981-08-31 1984-08-01 Ishihara Sangyo Kaisha, Ltd. Process for producing 2,6-difluorobenzonitrile
EP0120575B1 (en) * 1983-02-18 1989-06-14 Nippon Shokubai Kagaku Kogyo Co., Ltd Organic fluorine compounds
JPS604159A (ja) * 1983-06-23 1985-01-10 Ishihara Sangyo Kaisha Ltd フルオロベンゾニトリル系化合物の製造方法
US4704483A (en) * 1984-04-27 1987-11-03 Occidental Chemical Corporation 3,4-difluoro-5-nitrobenzotrifluoride and preparation of fluoro-nitro-benzotrifluorides
US4952719A (en) * 1984-10-15 1990-08-28 Occidental Chemical Corporation Process for the preparation of halo aromatic compounds
GB8500180D0 (en) * 1985-01-04 1985-02-13 Ici Plc Chemical process
US4680406A (en) * 1985-10-15 1987-07-14 The Dow Chemical Company Process for fluorinating halogenated organo-compounds
JPS62114939A (ja) * 1985-11-14 1987-05-26 Sumitomo Chem Co Ltd フルオロベンゼン誘導体の製造法
WO1987004149A1 (en) * 1986-01-06 1987-07-16 Mallinckrodt, Inc. Phase transfer catalysts
WO1987004148A1 (en) * 1986-01-06 1987-07-16 Mallinckrodt, Inc. Catalytic method for producing fluoroaromatic compounds using branched alkyl pyridinium salts
US4849552A (en) * 1986-01-06 1989-07-18 Mallinckrodt, Inc. Preparation of fluoroaromatic compounds in dispersion of potassium fluoride
US4642398A (en) * 1986-01-06 1987-02-10 Mallinckrodt, Inc. Preparation of fluoronitrobenzene compounds in dispersion of potassium fluoride
DE3642326A1 (de) * 1986-12-11 1988-06-23 Bayer Ag Verfahren zur gewinnung von substituierten fluorbenzolen
US4973772A (en) * 1987-02-07 1990-11-27 Mallinckrodt, Inc. Catalytic method for producing fluoroarmatic compounds using substituted pyridinium salts
JP2577567B2 (ja) * 1987-07-07 1997-02-05 イハラケミカル工業株式会社 芳香族フッ素化合物の製造方法
DE3827436A1 (de) * 1988-08-12 1990-02-15 Bayer Ag Verfahren zum einfuehren von fluoratomen an aromatische kerne durch nucleophilen austausch
WO1992000270A1 (de) * 1990-06-25 1992-01-09 Hoechst Aktiengesellschaft Verfahren zur herstellung von chlorfluornitrobenzolen und difluornitrobenzolen
EP0635486B1 (de) * 1993-07-21 1998-12-09 Clariant GmbH Verfahren zur Herstellung von Fluorbenzonitrilen

Also Published As

Publication number Publication date
WO1996020168A1 (en) 1996-07-04
HUT77239A (hu) 1998-03-02
CN1174546A (zh) 1998-02-25
US5502235A (en) 1996-03-26
AR000556A1 (es) 1997-07-10
IL116634A0 (en) 1996-03-31
FI972742A0 (fi) 1997-06-25
JPH10511941A (ja) 1998-11-17
DE69514122T2 (de) 2000-04-20
AU4164596A (en) 1996-07-19
TW307748B (es) 1997-06-11
IL116634A (en) 2003-04-10
DE69514122D1 (de) 2000-01-27
ATE187959T1 (de) 2000-01-15
AU702641B2 (en) 1999-02-25
EP0800506A1 (en) 1997-10-15
HU215936B (hu) 1999-03-29
BR9510428A (pt) 1998-07-07
DK0800506T3 (da) 2000-05-15
EP0800506B1 (en) 1999-12-22
FI972742A (fi) 1997-08-27
ZA9510902B (en) 1997-06-23
CA2209141A1 (en) 1996-07-04

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