DE68917567D1 - Verfahren zur Herstellung von Difluorbenzolen mit elektronenabziehenden Substituenten. - Google Patents

Verfahren zur Herstellung von Difluorbenzolen mit elektronenabziehenden Substituenten.

Info

Publication number
DE68917567D1
DE68917567D1 DE68917567T DE68917567T DE68917567D1 DE 68917567 D1 DE68917567 D1 DE 68917567D1 DE 68917567 T DE68917567 T DE 68917567T DE 68917567 T DE68917567 T DE 68917567T DE 68917567 D1 DE68917567 D1 DE 68917567D1
Authority
DE
Germany
Prior art keywords
difluorobenzenes
preparation
electron withdrawing
withdrawing substituents
substituents
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
DE68917567T
Other languages
English (en)
Other versions
DE68917567T2 (de
Inventor
R Garth Pews
Jack C Little
James A Gall
Charles A Wilson
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
DowElanco 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
Priority claimed from US07/276,711 external-priority patent/US4937396A/en
Application filed by DowElanco LLC filed Critical DowElanco LLC
Application granted granted Critical
Publication of DE68917567D1 publication Critical patent/DE68917567D1/de
Publication of DE68917567T2 publication Critical patent/DE68917567T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C255/00—Carboxylic acid nitriles
    • C07C255/49—Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
    • C07C255/50—Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton to carbon atoms of non-condensed six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
    • C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
    • C07C17/202—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction
    • C07C17/208—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction the other compound being MX

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Catalysts (AREA)
DE1989617567 1988-11-28 1989-11-27 Verfahren zur Herstellung von Difluorbenzolen mit elektronenabziehenden Substituenten. Expired - Lifetime DE68917567T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27671288A 1988-11-28 1988-11-28
US07/276,711 US4937396A (en) 1988-11-28 1988-11-28 Preparation of 3,4-difluorobenzotrifluoride

Publications (2)

Publication Number Publication Date
DE68917567D1 true DE68917567D1 (de) 1994-09-22
DE68917567T2 DE68917567T2 (de) 1994-12-22

Family

ID=26958095

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1989617567 Expired - Lifetime DE68917567T2 (de) 1988-11-28 1989-11-27 Verfahren zur Herstellung von Difluorbenzolen mit elektronenabziehenden Substituenten.

Country Status (7)

Country Link
EP (1) EP0372621B1 (de)
JP (1) JP2667720B2 (de)
AU (1) AU616326B2 (de)
BR (1) BR8906227A (de)
CA (1) CA2003919C (de)
DE (1) DE68917567T2 (de)
FI (1) FI92387C (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4937397A (en) * 1988-11-28 1990-06-26 The Dow Chemical Company Preparation of halofluorobenzenes
EP0497239A1 (de) * 1991-01-30 1992-08-05 Hoechst Aktiengesellschaft 2-Chlor-4,5-difluorbenzonitril und Verfahren zu seiner Herstellung
GB9110181D0 (de) * 1991-05-10 1991-07-03 Ici Plc
ES2174308T3 (es) 1996-11-22 2002-11-01 Albemarle Corp Reacciones de intercambio de halogenos y usos de las mismas.
GB0407952D0 (en) * 2004-04-08 2004-05-12 Amersham Plc Fluoridation method
JP4973143B2 (ja) * 2005-12-08 2012-07-11 住友化学株式会社 テトラフルオロテレフタル酸ジフルオライドの製造法
WO2007066529A1 (ja) * 2005-12-08 2007-06-14 Sumitomo Chemical Company, Limited テトラフルオロテレフタル酸ジフルオライドの製造法
JP6385845B2 (ja) * 2014-03-27 2018-09-05 大阪ガスケミカル株式会社 新規フルオレン化合物及びその製造方法
CN104387264B (zh) * 2014-11-11 2016-07-06 常州大学 一种合成2-氟-5-溴对苯二甲酸的方法
CN113527020B (zh) * 2021-07-06 2022-04-08 浙江大学 以氟盐为氟源的管道化连续氟化的方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229365A (en) * 1977-05-28 1980-10-21 Basf Aktiengesellschaft Manufacture of substituted fluorobenzenes
US4937397A (en) * 1988-11-28 1990-06-26 The Dow Chemical Company Preparation of halofluorobenzenes

Also Published As

Publication number Publication date
DE68917567T2 (de) 1994-12-22
CA2003919C (en) 2000-01-18
AU4557289A (en) 1990-05-31
CA2003919A1 (en) 1990-05-28
BR8906227A (pt) 1990-06-26
AU616326B2 (en) 1991-10-24
EP0372621A1 (de) 1990-06-13
JPH02218629A (ja) 1990-08-31
JP2667720B2 (ja) 1997-10-27
FI92387C (fi) 1994-11-10
EP0372621B1 (de) 1994-08-17
FI895662A0 (fi) 1989-11-27
FI92387B (fi) 1994-07-29

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition