BR9805392A - Processo para produção de 2-(metiltio)-5-(trifluormetil)-1,3,4-tiadiazol usando metilditiocarbazinato e ácido trifluoroacético. - Google Patents

Processo para produção de 2-(metiltio)-5-(trifluormetil)-1,3,4-tiadiazol usando metilditiocarbazinato e ácido trifluoroacético.

Info

Publication number
BR9805392A
BR9805392A BR9805392-2A BR9805392A BR9805392A BR 9805392 A BR9805392 A BR 9805392A BR 9805392 A BR9805392 A BR 9805392A BR 9805392 A BR9805392 A BR 9805392A
Authority
BR
Brazil
Prior art keywords
trifluoroacetic acid
thiadiazole
methylthio
production
methyldithiocarbazinate
Prior art date
Application number
BR9805392-2A
Other languages
English (en)
Other versions
BR9805392B1 (pt
Inventor
Vijay C Desai
Peter E Newallis
Vidyanatha A Prasad
Hermann Dr Seifert
Original Assignee
Bayer Ag
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 Bayer Ag filed Critical Bayer Ag
Publication of BR9805392A publication Critical patent/BR9805392A/pt
Publication of BR9805392B1 publication Critical patent/BR9805392B1/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D285/00—Heterocyclic compounds containing rings having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by groups C07D275/00 - C07D283/00
    • C07D285/01—Five-membered rings
    • C07D285/02—Thiadiazoles; Hydrogenated thiadiazoles
    • C07D285/04—Thiadiazoles; Hydrogenated thiadiazoles not condensed with other rings
    • C07D285/12—1,3,4-Thiadiazoles; Hydrogenated 1,3,4-thiadiazoles
    • C07D285/125—1,3,4-Thiadiazoles; Hydrogenated 1,3,4-thiadiazoles with oxygen, sulfur or nitrogen atoms, directly attached to ring carbon atoms, the nitrogen atoms not forming part of a nitro radical
    • 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)
  • Nitrogen- Or Sulfur-Containing Heterocyclic Ring Compounds With Rings Of Six Or More Members (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Patente de Invenção: <B>"PROCESSO PARA PRODUçãO DE 2-(METILTIO)-5-(TRIFLUORMETIL)-1,3,4- TIADIAZOL USANDO METILDITIOCARBAZINATO E áCIDO TRIFLUOROACéTICO"<D>. A presente invenção fornece um processo de fabricação de 2-(metiltio)-5-(trifluorometil)-1,3,4-tiadiazol. O processo inclui as etapas de (a) reação de metildiocarbazinato com um excesso molar de ácido trifluoroacético; e (b) remoção da água e do excesso de ácido trifluoroacético. A água e o excesso de ácido trifluoroacético são removidos preferencialmente através de destilação.
BRPI9805392-2A 1997-12-12 1998-12-11 processo para produção de 2-(metiltio)-5-(trifluorometil)-1,3,4-tiadiazol usando metilditiocarbazinato e ácido trifluoroacético. BR9805392B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/989,152 US5905157A (en) 1997-12-12 1997-12-12 Process for producing 2-(methylthio)-5-(trifluoromethyl)-1,3,4-thiadiazole using methyldithiocarbazinate and trifluoroacetic acid

Publications (2)

Publication Number Publication Date
BR9805392A true BR9805392A (pt) 2000-02-01
BR9805392B1 BR9805392B1 (pt) 2009-08-11

Family

ID=25534816

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI9805392-2A BR9805392B1 (pt) 1997-12-12 1998-12-11 processo para produção de 2-(metiltio)-5-(trifluorometil)-1,3,4-tiadiazol usando metilditiocarbazinato e ácido trifluoroacético.

Country Status (14)

Country Link
US (1) US5905157A (pt)
EP (1) EP0926142B1 (pt)
JP (1) JP4472039B2 (pt)
KR (1) KR100577638B1 (pt)
CN (1) CN1101387C (pt)
BR (1) BR9805392B1 (pt)
CA (1) CA2254558C (pt)
DE (1) DE69832252T2 (pt)
DK (1) DK0926142T3 (pt)
ES (1) ES2248871T3 (pt)
HU (1) HU221652B1 (pt)
IL (1) IL127458A (pt)
IN (1) IN190810B (pt)
TW (1) TW593295B (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0403042D0 (sv) * 2004-12-14 2004-12-14 Polymer Kompositer I Goeteborg Improved stabilization and performance of autocatalytic electroless process
CN107721948A (zh) * 2017-11-16 2018-02-23 江苏绿叶农化有限公司 一种氟噻草胺的制备方法
EP3590526A1 (en) * 2018-07-05 2020-01-08 Antev Limited A lyophilization process and a teverelix-tfa lyophilizate obtained thereby

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH464212A (de) * 1963-10-16 1968-10-31 Geigy Ag J R Verfahren zur Herstellung von 5-Chlormethyl-1,3,4-thiadiazolderivaten
US3562284A (en) * 1968-02-05 1971-02-09 American Cyanamid Co 2-(substituted) sulfonyl-5-trifluoromethyl-1,3,4-thiadiazoles
DE3422861A1 (de) * 1984-06-20 1986-01-02 Bayer Ag, 5090 Leverkusen Verfahren zur herstellung von heteroaryloxyacetamiden
DE3722320A1 (de) * 1987-07-07 1989-01-19 Bayer Ag Mikrobizide mittel
DE4003436A1 (de) * 1990-02-06 1991-08-08 Bayer Ag Verfahren zur herstellung von 2-alkylthio-1,3,4-thiadiazolen

Also Published As

Publication number Publication date
DE69832252D1 (de) 2005-12-15
JPH11236379A (ja) 1999-08-31
IN190810B (pt) 2003-08-23
DK0926142T3 (da) 2006-03-20
CN1224719A (zh) 1999-08-04
KR100577638B1 (ko) 2006-09-27
HUP9802875A3 (en) 2000-02-28
ES2248871T3 (es) 2006-03-16
HU221652B1 (hu) 2002-12-28
KR19990062741A (ko) 1999-07-26
EP0926142B1 (en) 2005-11-09
CN1101387C (zh) 2003-02-12
IL127458A (en) 2001-01-28
US5905157A (en) 1999-05-18
EP0926142A1 (en) 1999-06-30
CA2254558C (en) 2008-01-08
CA2254558A1 (en) 1999-06-12
DE69832252T2 (de) 2006-07-20
HU9802875D0 (en) 1999-02-01
BR9805392B1 (pt) 2009-08-11
HUP9802875A2 (hu) 1999-09-28
JP4472039B2 (ja) 2010-06-02
TW593295B (en) 2004-06-21
IL127458A0 (en) 1999-10-28

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B15K Others concerning applications: alteration of classification

Free format text: ALTERADA DE INT. CL: C07 D285/125

Ipc: C07D 285/125 (2008.04)

B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 20/10/2009, OBSERVADAS AS CONDICOES LEGAIS.

B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 20.10.2019