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2 007 399

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C1

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IPC

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Application

4947101/04, 1991-06-18

(22)

Actual filing date

1991-06-18

(45)

Published

1994-02-15

(72)

Inventor

Gorelik M.V.Titova S.P.Morozov A.A.

(73)

Holder

Moskovskoe Nauchno-Proizvodstvennoe Ob"Edinenie

METHOD OF 2 - AMINO - 5 - CHLORO - 1,3,4 - THIADIAZOLE SYNTHESIS Russian patent published in 1994 - IPC

Abstract RU 2007399 C1

FIELD: organic chemistry. SUBSTANCE: product: 2-amino-5-chloro-1,3,4-thiadiazole is synthesized by acetylation of 2-amino-1,3,4-thiadiazole in the medium of dimethylformamide following by chlorination with gaseous chlorine of product obtained. Then 5-chloro-2-acetyl-amino-1,3,4-thiadiazole is isolated, treated with 15-20% hydrochloric acid and neutralized with ammonia solution. Product is crystallized from ethanol. Yield is 80% , m. p. is 192-193 C. Synthesized compound is used for synthesis of drugs. EFFECT: enhanced yield of product.

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RU 2 007 399 C1

Authors

Gorelik M.V.

Titova S.P.

Morozov A.A.

Dates

1994-02-15—Published

1991-06-18—Filed

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