IL62839A0 - Manufacture of 2-chlorobenzothiazole - Google Patents

Manufacture of 2-chlorobenzothiazole

Info

Publication number
IL62839A0
IL62839A0 IL62839A IL6283981A IL62839A0 IL 62839 A0 IL62839 A0 IL 62839A0 IL 62839 A IL62839 A IL 62839A IL 6283981 A IL6283981 A IL 6283981A IL 62839 A0 IL62839 A0 IL 62839A0
Authority
IL
Israel
Prior art keywords
chlorobenzothiazole
manufacture
temperatures
degrees
formula
Prior art date
Application number
IL62839A
Original Assignee
Cassella 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 Cassella Ag filed Critical Cassella Ag
Publication of IL62839A0 publication Critical patent/IL62839A0/en

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Thiazole And Isothizaole Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)

Abstract

1. Process for the manufacture of 2-chlorobenzothiazole of the formula I see diagramm : EP0039905,P4,F2 wherein R**1 , R**2 , R**3 and R**4 independently of one another represent a hydrogen atom or halogen atom, characterised in that a 2-chlorophenyl isocyanide dichloride of the formula II see diagramm : EP0039905,P4,F4 in which R**1 , R**2 , R**3 and R**4 have the abovementioned meaning, is reacted with sulphur in a molar ratio of at least 1:(1.5 to 10) at temperatures from 150 to 400 degrees C and a chlorinating agent is subsequently added, at temperatures from -20 to 300 degrees C, to the reaction mixture obtained in the reaction.
IL62839A 1980-05-12 1981-05-11 Manufacture of 2-chlorobenzothiazole IL62839A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803018088 DE3018088A1 (en) 1980-05-12 1980-05-12 METHOD FOR PRODUCING 2-CHLORBENZOTHIAZOLE

Publications (1)

Publication Number Publication Date
IL62839A0 true IL62839A0 (en) 1981-07-31

Family

ID=6102172

Family Applications (1)

Application Number Title Priority Date Filing Date
IL62839A IL62839A0 (en) 1980-05-12 1981-05-11 Manufacture of 2-chlorobenzothiazole

Country Status (5)

Country Link
EP (1) EP0039905B1 (en)
JP (1) JPS577476A (en)
AT (1) ATE5192T1 (en)
DE (2) DE3018088A1 (en)
IL (1) IL62839A0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3221938A1 (en) * 1982-06-11 1983-12-22 Cassella Ag, 6000 Frankfurt METHOD FOR PRODUCING CRYSTALLINE 2,6-DICHLORBENZOTHIAZOL
DE3234530A1 (en) * 1982-09-17 1984-03-22 Bayer Ag, 5090 Leverkusen METHOD FOR PRODUCING 2-CHLORBENZTHIAZOL

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1670706C3 (en) * 1966-05-31 1974-06-06 Bayer Ag, 5090 Leverkusen Process for the preparation of substituted 2-chlorobenzothiazoles
DE2213865C3 (en) * 1972-03-22 1981-01-22 Bayer Ag, 5090 Leverkusen Process for the preparation of chlorothiazoles
DE2451632A1 (en) * 1974-10-30 1976-05-06 Bayer Ag METHOD FOR MANUFACTURING TRICHLORTHIAZOLE

Also Published As

Publication number Publication date
ATE5192T1 (en) 1983-11-15
EP0039905B1 (en) 1983-11-02
DE3018088A1 (en) 1981-11-19
DE3161314D1 (en) 1983-12-08
EP0039905A1 (en) 1981-11-18
JPS577476A (en) 1982-01-14

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