BR0208743A - Process for producing thiosemicarbazides - Google Patents

Process for producing thiosemicarbazides

Info

Publication number
BR0208743A
BR0208743A BR0208743-0A BR0208743A BR0208743A BR 0208743 A BR0208743 A BR 0208743A BR 0208743 A BR0208743 A BR 0208743A BR 0208743 A BR0208743 A BR 0208743A
Authority
BR
Brazil
Prior art keywords
thiosemicarbazide
produce
producing
thiosemicarbazides
tiosemicarbides
Prior art date
Application number
BR0208743-0A
Other languages
Portuguese (pt)
Inventor
Colette De Klerk
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
Publication of BR0208743A publication Critical patent/BR0208743A/en

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
    • C07D285/135—Nitrogen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C337/00—Derivatives of thiocarbonic acids containing functional groups covered by groups C07C333/00 or C07C335/00 in which at least one nitrogen atom of these functional groups is further bound to another nitrogen atom not being part of a nitro or nitroso group
    • C07C337/06—Compounds containing any of the groups, e.g. thiosemicarbazides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Nitrogen- Or Sulfur-Containing Heterocyclic Ring Compounds With Rings Of Six Or More Members (AREA)

Abstract

"PROCESSO PARA PRODUZIR TIOSSEMICARBAZIDAS". A presente invenção refere-se a um processo que é fornecido para produzir uma tiossemicarbazida a qual inclui as etapas de reagir uma alquilamina com dissulfeto de carbono na presença de uma base selecionada a partir de N,N-diisopropiletilamina e N,N-diisopropil-metilamina para produzir um intermediário e converter o intermediário na tiossemicarbazida. O processo tem aplicação particular para produzir 4-metil-3-tiossemicarbazida, um intermediário útil na produção do herbicida de amplo espectro tebutiuron."PROCESS TO PRODUCE TIOSEMICARBIDES". The present invention relates to a process which is provided for producing a thiosemicarbazide which includes the steps of reacting an alkylamine with carbon disulfide in the presence of a base selected from N, N-diisopropylethylamine and N, N-diisopropyl methylamine to produce an intermediate and convert the intermediate to thiosemicarbazide. The process has particular application to produce 4-methyl-3-thiosemicarbazide, an intermediate useful in the production of the broad spectrum herbicide tebutiuron.

BR0208743-0A 2001-04-09 2002-04-02 Process for producing thiosemicarbazides BR0208743A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA200102904 2001-04-09
PCT/IB2002/001023 WO2002081438A2 (en) 2001-04-09 2002-04-02 Process for producing thiosemicarbazides

Publications (1)

Publication Number Publication Date
BR0208743A true BR0208743A (en) 2004-06-22

Family

ID=25589131

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0208743-0A BR0208743A (en) 2001-04-09 2002-04-02 Process for producing thiosemicarbazides

Country Status (10)

Country Link
EP (1) EP1377546A2 (en)
JP (1) JP2004536795A (en)
KR (1) KR20030086351A (en)
CN (1) CN1518539A (en)
BR (1) BR0208743A (en)
CA (1) CA2446918A1 (en)
HU (1) HUP0303844A2 (en)
IL (1) IL158288A0 (en)
MX (1) MXPA03009215A (en)
WO (1) WO2002081438A2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102584661A (en) * 2012-01-19 2012-07-18 中国科学院海洋研究所 Preparation method of substituted phenylthiosemicarbazide compound
CN103709081B (en) * 2013-12-13 2016-01-06 黄河三角洲京博化工研究院有限公司 A kind of preparation method of thiosemicarbazide
CN104860857B (en) * 2015-04-09 2017-03-08 山东华阳农药化工集团有限公司 Methylthiosemicarbazone synthesis technique
CN105833909B (en) * 2016-04-06 2018-05-15 上海应用技术学院 (S) Cr-Anderson types heteropolyacid catalyst thiourea modified -1- (2- hydroxyl -1- phenethyls), preparation method and applications
CN105772100B (en) * 2016-04-06 2018-05-15 上海应用技术学院 (R) Cr-Anderson types heteropolyacid catalyst thiourea modified -1- (1- (2- naphthyls) ethyl), preparation method and applications
CN105854940B (en) * 2016-04-06 2018-05-15 上海应用技术学院 (R) Cr-Anderson types heteropolyacid catalyst thiourea modified -1- (1- phenethyls), preparation method and applications
CN105797770B (en) * 2016-04-06 2018-03-30 上海应用技术学院 (S) the thiourea modified Cr Anderson types heteropolyacid catalyst of 1 (phenylpropyl of 3 hydroxyl 1), preparation method and applications
CN105772085B (en) * 2016-04-06 2018-04-13 上海应用技术学院 (S) the thiourea modified Cr Anderson types heteropolyacid catalyst of 1 (1 ethoxy, 1 isopropyl), preparation method and applications
CN105797769B (en) * 2016-04-06 2018-03-30 上海应用技术学院 (R) the thiourea modified Mn Anderson types heteropolyacid catalyst of 1 (phenethyl of 2 hydroxyl 1), preparation method and applications
CN105772086B (en) * 2016-04-06 2018-03-30 上海应用技术学院 (S) the thiourea modified Mn Anderson types heteropolyacid catalyst of 1 (isopropyl of 1 ethoxy 1), preparation method and applications
CN105772101B (en) * 2016-04-06 2018-03-30 上海应用技术学院 The Mn Anderson types heteropolyacid catalyst of 1 Phenethylthiourea modification, preparation method and applications
CN105854952B (en) * 2016-04-06 2018-05-15 上海应用技术学院 (S) Mn-Anderson types heteropolyacid catalyst thiourea modified -1- (2- hydroxyl -1- phenethyls), preparation method and applications

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA931961A (en) * 1970-04-17 1973-08-14 Gulf Research And Development Company Combating unwanted vegetation with 1,3,4-thiadiazolylureas
EP0339964B1 (en) * 1988-04-27 1994-12-14 DowElanco Improved synthesis of 4-methyl-3-thiosemicarbazide

Also Published As

Publication number Publication date
EP1377546A2 (en) 2004-01-07
CN1518539A (en) 2004-08-04
WO2002081438A2 (en) 2002-10-17
IL158288A0 (en) 2004-05-12
JP2004536795A (en) 2004-12-09
MXPA03009215A (en) 2004-03-10
KR20030086351A (en) 2003-11-07
WO2002081438A3 (en) 2002-11-28
HUP0303844A2 (en) 2004-03-29
CA2446918A1 (en) 2002-10-17

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]