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2 091 372

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C1

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IPC

(21) (22)

Application

95102936/04, 1995-03-02

(22)

Actual filing date

1995-03-02

(45)

Published

1997-09-27

(72)

Inventor

Krajushkin M.M.Jarovenko V.N.Shirinjan V.Z.Zavarzin I.V.

(73)

Holder

Krajushkin Mikhail MikhajlovichJarovenko Vladimir NikolaevichShirinjan Valerik ZarmirkovichZavarzin Igor' Viktorovich

METHOD OF PREPARING N-(CYCLOHEXYLTHIO)PHTHALIMIDE Russian patent published in 1997 - IPC

Abstract RU 2091372 C1

FIELD: chemical industry. SUBSTANCE: claimed method of preparing N-(cyclohexylthio)phthalimide by reaction of cyclohexyl chloride with homogeneous Na2S solution and sulphur in aqueous medium at boiling temperature. The resulting dicyclohexyl disulfide is chlorinated in organic solvent and the resulting sulphanyl chloride solution is added dropwise to phthalimide in the presence of alkali, water or alcohol. The reaction should be preferably carried out in the presence of quaternary ammonium salt. EFFECT: more efficient preparation method.

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RU 2 091 372 C1

Authors

Krajushkin M.M.

Jarovenko V.N.

Shirinjan V.Z.

Zavarzin I.V.

Dates

1997-09-27—Published

1995-03-02—Filed

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