BR0000356A - Processo para a produção de diésteres 2,3,5-trimetilhidroquinona - Google Patents

Processo para a produção de diésteres 2,3,5-trimetilhidroquinona

Info

Publication number
BR0000356A
BR0000356A BR0000356-5A BR0000356A BR0000356A BR 0000356 A BR0000356 A BR 0000356A BR 0000356 A BR0000356 A BR 0000356A BR 0000356 A BR0000356 A BR 0000356A
Authority
BR
Brazil
Prior art keywords
acid
boric acid
ketoisophorone
cyclohex
dione
Prior art date
Application number
BR0000356-5A
Other languages
English (en)
Inventor
Steffen Krill
Klaus Huthmacher
Original Assignee
Degussa
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 Degussa filed Critical Degussa
Publication of BR0000356A publication Critical patent/BR0000356A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/582—Recycling of unreacted starting or intermediate materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Liquid Crystal Substances (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)

Abstract

Patente de Invenção: <B>"PROCESSO PARA A PRODUçãO DE DIéSTERES 2,3,5 - TRIMETILHIDROQUINONA"<D>. A invenção refere-se a um processo aperfeiçoado para a produção de diésteres 2,3,5-trimetilhidroquinona por rearranjo de 2,6,6-trimetil-2-ciclohexeno-1,4-diona (4-oxoisoforona, cetoisoforona) na presença de um dissolvido, catalisador ácido e um agente de acilação, tais como por exemplo anidridos carboxílicos ou haletos de ácido carboxílico. O diéster 2,3,5-trimetilhidroquinona pode optativamente então ser saponificado para fornecer 2,3,5-trimetilhidroquinona (TMHQ) livre, a qual é um bloco de construção valioso na síntese de vitamina E.
BR0000356-5A 1999-02-11 2000-02-10 Processo para a produção de diésteres 2,3,5-trimetilhidroquinona BR0000356A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19905685A DE19905685A1 (de) 1999-02-11 1999-02-11 Verfahren zur Herstellung von 2,3,5-Trimethylhydrochinondiestern

Publications (1)

Publication Number Publication Date
BR0000356A true BR0000356A (pt) 2000-08-15

Family

ID=7897163

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0000356-5A BR0000356A (pt) 1999-02-11 2000-02-10 Processo para a produção de diésteres 2,3,5-trimetilhidroquinona

Country Status (14)

Country Link
US (1) US6417409B1 (pt)
EP (1) EP1028103B1 (pt)
JP (1) JP2000229909A (pt)
CN (1) CN1265390A (pt)
AT (1) ATE223369T1 (pt)
BR (1) BR0000356A (pt)
CA (1) CA2298740A1 (pt)
DE (2) DE19905685A1 (pt)
DK (1) DK1028103T3 (pt)
ES (1) ES2182740T3 (pt)
ID (1) ID25771A (pt)
IL (1) IL134454A0 (pt)
IN (1) IN187710B (pt)
YU (1) YU6200A (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002356637A1 (en) 2001-12-14 2003-06-30 Roche Vitamins Ag Manufacture of trimethylhydroquinone diacylates
ATE397579T1 (de) * 2003-11-07 2008-06-15 Dsm Ip Assets Bv Verfahren zur herstellung von 2,3,5- trimethylhydrochinondiacylaten
CN111675612B (zh) * 2020-06-16 2023-03-03 万华化学集团股份有限公司 一种制备2,3,5-三甲基氢醌二酯的方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
UST900015I4 (en) * 1970-10-01 1972-07-25 defensive publication
FR2327980A1 (fr) * 1975-10-14 1977-05-13 Rhone Poulenc Ind Procede de preparation de trimethylhydroquinone
DK0808815T3 (da) * 1996-05-14 2001-11-26 Degussa Fremgangsmåde til fremstilling af trimethylhydroquinon
DE69708450T2 (de) * 1996-12-27 2002-05-16 Daicel Chem Methode zum Herstellen von Trimethylhydroquinondiester
EP0850912B1 (en) * 1996-12-27 2001-11-07 Daicel Chemical Industries, Ltd. Method for producing trimethylcatechol diester

Also Published As

Publication number Publication date
DE50000430D1 (de) 2002-10-10
EP1028103B1 (de) 2002-09-04
CA2298740A1 (en) 2000-08-11
EP1028103A1 (de) 2000-08-16
IN187710B (pt) 2002-06-08
YU6200A (sh) 2002-03-18
DE19905685A1 (de) 2000-08-17
ES2182740T3 (es) 2003-03-16
US6417409B1 (en) 2002-07-09
ATE223369T1 (de) 2002-09-15
ID25771A (id) 2000-11-02
JP2000229909A (ja) 2000-08-22
DK1028103T3 (da) 2003-01-06
IL134454A0 (en) 2001-04-30
CN1265390A (zh) 2000-09-06

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 4A, 5A, 6A,E 7A ANUIDADES

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1913 DE 04/09/2007.