GB560695A - Purification of 2-mercaptoarylenethiazoles - Google Patents

Purification of 2-mercaptoarylenethiazoles

Info

Publication number
GB560695A
GB560695A GB13662/42A GB1366242A GB560695A GB 560695 A GB560695 A GB 560695A GB 13662/42 A GB13662/42 A GB 13662/42A GB 1366242 A GB1366242 A GB 1366242A GB 560695 A GB560695 A GB 560695A
Authority
GB
United Kingdom
Prior art keywords
sulphur
carbon bisulphide
aniline
carbon
bisulphide
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
GB13662/42A
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.)
Wingfoot Corp
Original Assignee
Wingfoot Corp
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 Wingfoot Corp filed Critical Wingfoot Corp
Publication of GB560695A publication Critical patent/GB560695A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D277/00—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
    • C07D277/60—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings condensed with carbocyclic rings or ring systems
    • C07D277/62—Benzothiazoles
    • C07D277/68—Benzothiazoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2
    • C07D277/70—Sulfur atoms
    • C07D277/72—2-Mercaptobenzothiazole

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Thiazole And Isothizaole Compounds (AREA)

Abstract

2-Mercaptoarylenethiazoles are purified by treating the crude product in the form of water-wet pellets with an organic solvent for the impurities which is heavier than water and immiscible therewith. The preferred solvent is carbon bisulphide, but carbon tetrachloride or chloroform may also be used. The treatment may be carried out either as a continuous or as a batch process. Thiazoles to which the process of the invention may be applied include 2 - mercaptobenzothiazole, 2 - mercaptotolylthiazoles, 2 - mercaptoxylylthiazoles, 2 - mercaptoalkoxybenzothiazoles, 2 - mercapto - 4 - phenylbenzothiazole, and the 2 - mercaptonaphthothiazoles. The 2-mercaptoarylenethiazoles which are purified by the process of the present invention may be prepared by any convenient method. Methods mentioned by which 2-mercaptobenzothiazole may be prepared include processes starting from dianilinomethane, sulphur and carbon bisulphide; from formanilide and sulphur, with or without carbon bisulphide; from thiocarbanilide carbon bisulphide and sulphur dichloride; from anilinobenzothiazole and hydrogen sulphide; from phenyl mustard oil and sulphur; from diphenylthiourea, carbon bisulphide and sulphur; from anhydroformaldehyde-aniline and sulphur; from o-o1-diaminodiphenyldisulphide and carbon bisulphide; from aniline sulphite, aniline and carbon bisulphide; from aniline, carbon bisulphide and nitrobenzene; and from aniline nitrobenzene sulphur and carbon bisulphide. An example of the process is described. Specifications 283,679, [Class 2 (iii)], 475,296 and 479,855, are referred to.
GB13662/42A 1942-05-20 1942-09-29 Purification of 2-mercaptoarylenethiazoles Expired GB560695A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US560695XA 1942-05-20 1942-05-20

Publications (1)

Publication Number Publication Date
GB560695A true GB560695A (en) 1944-04-17

Family

ID=22001958

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13662/42A Expired GB560695A (en) 1942-05-20 1942-09-29 Purification of 2-mercaptoarylenethiazoles

Country Status (1)

Country Link
GB (1) GB560695A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE936039C (en) * 1953-04-26 1955-12-01 American Cyanamid Co Process for the purification of crude 2-mercaptobenzothiazole
CN102375036A (en) * 2011-09-20 2012-03-14 科迈化工股份有限公司 Liquid phase chromatography analysis method for active ingredient content of crude product M

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE936039C (en) * 1953-04-26 1955-12-01 American Cyanamid Co Process for the purification of crude 2-mercaptobenzothiazole
CN102375036A (en) * 2011-09-20 2012-03-14 科迈化工股份有限公司 Liquid phase chromatography analysis method for active ingredient content of crude product M

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