DE69232923T2 - Verfahren zur Herstellung von Alkylpyrazinen - Google Patents

Verfahren zur Herstellung von Alkylpyrazinen

Info

Publication number
DE69232923T2
DE69232923T2 DE69232923T DE69232923T DE69232923T2 DE 69232923 T2 DE69232923 T2 DE 69232923T2 DE 69232923 T DE69232923 T DE 69232923T DE 69232923 T DE69232923 T DE 69232923T DE 69232923 T2 DE69232923 T2 DE 69232923T2
Authority
DE
Germany
Prior art keywords
preparation
refluxing
alkyl
alkyl pyrazines
pyrazines
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 - Fee Related
Application number
DE69232923T
Other languages
English (en)
Other versions
DE69232923D1 (de
Inventor
Teh-Kuei Chen
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.)
Societe des Produits Nestle SA
Nestle SA
Original Assignee
Societe des Produits Nestle SA
Nestle SA
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 Societe des Produits Nestle SA, Nestle SA filed Critical Societe des Produits Nestle SA
Publication of DE69232923D1 publication Critical patent/DE69232923D1/de
Application granted granted Critical
Publication of DE69232923T2 publication Critical patent/DE69232923T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D241/00—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings
    • C07D241/02—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings
    • C07D241/10—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
    • C07D241/12—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Liquid Crystal Substances (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
DE69232923T 1991-03-26 1992-03-17 Verfahren zur Herstellung von Alkylpyrazinen Expired - Fee Related DE69232923T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67541791A 1991-03-26 1991-03-26

Publications (2)

Publication Number Publication Date
DE69232923D1 DE69232923D1 (de) 2003-03-20
DE69232923T2 true DE69232923T2 (de) 2003-08-21

Family

ID=24710395

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69232923T Expired - Fee Related DE69232923T2 (de) 1991-03-26 1992-03-17 Verfahren zur Herstellung von Alkylpyrazinen

Country Status (6)

Country Link
US (1) US6225471B1 (de)
EP (1) EP0505891B1 (de)
JP (1) JPH0730050B2 (de)
AT (1) ATE232523T1 (de)
CA (1) CA2062149A1 (de)
DE (1) DE69232923T2 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5304648A (en) * 1992-09-29 1994-04-19 Nestec S.A. Pyrazine preparation
EP0708759B1 (de) * 1994-05-10 2000-08-02 Firmenich Sa Verfahren zu herstellung von substituierten pyrazinen
CN100556895C (zh) * 2006-10-18 2009-11-04 张锋 川芎嗪的制备方法
CN101581707B (zh) * 2009-06-29 2012-09-19 浙江大学 一种同时检测食醋中乙偶姻和川芎嗪的方法
CN103664803A (zh) * 2012-09-17 2014-03-26 王天桃 2,3,5,6-四甲基吡嗪新的合成方法
CN104761508A (zh) * 2014-10-31 2015-07-08 合肥平光制药有限公司 一种川芎嗪的高收率制备方法
US11091446B2 (en) * 2017-03-24 2021-08-17 R.J. Reynolds Tobacco Company Methods of selectively forming substituted pyrazines
US11667612B2 (en) * 2017-10-25 2023-06-06 Arizona Board Of Regents On Behalf Of The University Of Arizona Compositions and methods for delivering pharmaceutical agents
CN107879987A (zh) * 2017-12-23 2018-04-06 山东吉田香料股份有限公司 一种2,3,5,6‑四甲基吡嗪的制备方法
CN108863954A (zh) * 2018-08-03 2018-11-23 滕州市悟通香料有限责任公司 一种2,3,5,6-四甲基吡嗪的合成方法及装置
CN108892645B (zh) * 2018-09-15 2021-07-13 广州方中化工有限公司 一种制备四甲基吡嗪的方法
US20240043391A1 (en) 2021-02-02 2024-02-08 Symrise Ag Method for producing alkylpyrazines

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3067199A (en) * 1956-09-13 1962-12-04 Wyandotte Chemicals Corp Method for preparing alkyl-substituted piperazines, alkyl-substituted pyrazines, andmixtures thereof
FR1593328A (de) * 1968-11-22 1970-05-25
US4064124A (en) * 1974-05-25 1977-12-20 Basf Aktiengesellschaft Manufacture of pyrazines
JPS6058756B2 (ja) * 1976-02-13 1985-12-21 高砂香料工業株式会社 アルキルピラジンの製造法
US4855431A (en) * 1983-01-13 1989-08-08 Mobil Oil Corp. Process for making alkyl pyrazines

Also Published As

Publication number Publication date
US6225471B1 (en) 2001-05-01
DE69232923D1 (de) 2003-03-20
CA2062149A1 (en) 1992-09-27
EP0505891B1 (de) 2003-02-12
JPH0730050B2 (ja) 1995-04-05
JPH0597820A (ja) 1993-04-20
EP0505891A1 (de) 1992-09-30
ATE232523T1 (de) 2003-02-15

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee