GB747048A - Improvements in the production of 2.5-dimercapto-1.3.4- thiadiazole - Google Patents

Improvements in the production of 2.5-dimercapto-1.3.4- thiadiazole

Info

Publication number
GB747048A
GB747048A GB6193/54A GB619354A GB747048A GB 747048 A GB747048 A GB 747048A GB 6193/54 A GB6193/54 A GB 6193/54A GB 619354 A GB619354 A GB 619354A GB 747048 A GB747048 A GB 747048A
Authority
GB
United Kingdom
Prior art keywords
alkali
dimercapto
hydrazine
reaction
solution
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
Application number
GB6193/54A
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik 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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB747048A publication Critical patent/GB747048A/en
Expired legal-status Critical Current

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

2,5 - Dimercapto - 1,3,4 - thiodiazole is prepared by reacting about 2 mols. of carbon disulphide with about 1 mol. of hydrazine at elevated temperature and in the presence of at least three equivalents of caustic soda solution, followed by acidifying the resultant solution (e.g. with hydrochloric acid). Strongly alkaline technical solutions of hydrazine can be employed, e.g. those obtained from the reaction of ammonia and alkali-hypochlorite solutions, or from urea, alkali-hypochlorite and caustic alkali solution. The reaction is preferably conducted at 50 DEG to 80 DEG C., and in presence of solvents (e.g. alcohols or ethers) and/or emulsifiers.
GB6193/54A 1953-03-14 1954-03-03 Improvements in the production of 2.5-dimercapto-1.3.4- thiadiazole Expired GB747048A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE747048X 1953-03-14

Publications (1)

Publication Number Publication Date
GB747048A true GB747048A (en) 1956-03-28

Family

ID=6648541

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6193/54A Expired GB747048A (en) 1953-03-14 1954-03-03 Improvements in the production of 2.5-dimercapto-1.3.4- thiadiazole

Country Status (1)

Country Link
GB (1) GB747048A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109912536A (en) * 2019-03-18 2019-06-21 山东昌邑四方医药化工有限公司 A kind of dimercapto -1,3,4 2,5-, the synthetic method of-thiadiazoles
RU2743164C1 (en) * 2020-04-24 2021-02-15 Общество с ограниченной ответственностью Научно-производственное предприятие "КФ" Method for the preparation of 2,5-dimercapto-1,3,4-thiadiazole (dmtd)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109912536A (en) * 2019-03-18 2019-06-21 山东昌邑四方医药化工有限公司 A kind of dimercapto -1,3,4 2,5-, the synthetic method of-thiadiazoles
RU2743164C1 (en) * 2020-04-24 2021-02-15 Общество с ограниченной ответственностью Научно-производственное предприятие "КФ" Method for the preparation of 2,5-dimercapto-1,3,4-thiadiazole (dmtd)
WO2021215958A1 (en) * 2020-04-24 2021-10-28 Общество с ограниченной ответственностью Научно-производственное предприятие "КФ" Method for producing 2,5-dimercapto-1,3,4-thiadiazole (dmtd) and 2,5-dimercapto-1,3,4-thiadiazole produced by said method

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