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2 203 277

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Application

2001118075/04, 2001-07-04

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Start date

2001-07-04

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Actual filing date

2001-07-04

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Published

2003-04-27

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Inventor

Bochenkova K.A.Gudzenko V.I.Salov B.V.

(73)

Holder

Federal'Noe Gosudarstvennoe Unitarnoe Predprijatie Nauchnyj Tsentr Institut Organicheskikh Poluproduktov I Krasitelej"

METHOD OF SYNTHESIS OF 5-CHLORO-2,1,3-BENZOTHIA- DIAZOLE Russian patent published in 2003 - IPC

Abstract RU 2203277 C2

FIELD: organic chemistry, chemical technology. SUBSTANCE: invention relates to method of synthesis of 5-chloro-2,1,3-benzothiadiazole by interaction of 4-chloro-1,2-phenylenediamine with thionyl chloride in the presence of catalytic amount of dimethylformamide in organic solvent medium at 125-130 C. Invention provides increase of yield of 5-chloro-2,1,3-benzothiadiazole. EFFECT: simplified method, increased yield. 4 ex

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RU 2 203 277 C2

Authors

Bochenkova K.A.

Gudzenko V.I.

Salov B.V.

Dates

2003-04-27—Published

2001-07-04—Filed

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