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2 030 377

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C1

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IPC

(21) (22)

Application

5030762/04, 1992-03-04

(22)

Actual filing date

1992-03-04

(45)

Published

1995-03-10

(72)

Inventor

Romanova V.S.Parnes Z.N.Dulova V.G.Vol'Pin M.E.

(73)

Holder

Institut Ehlementoorganicheskikh Soedinenij Im.A.N.Nesmejanova

METHOD OF SYNTHESIS OF 2-FORMYL-2,5- DIBUTYLTHIO-2,3- DIHYDRO-4H-PYRAN Russian patent published in 1995 - IPC

Abstract RU 2030377 C1

FIELD: chemical technology. SUBSTANCE: mixture of polychlorinated diphenyls is subjected for complete dechlorination with methyl- or ethoxyhydride siloxane in the presence of Raney nickel as a catalyst at the molar ratio of reagents = 1: (15-50): (10-20), in the medium of saturated hydrocarbon, at 215-240 C. Product is used in chemical and electric engineering industry. EFFECT: improved method of synthesis.

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RU 2 030 377 C1

Authors

Romanova V.S.

Parnes Z.N.

Dulova V.G.

Vol'Pin M.E.

Dates

1995-03-10—Published

1992-03-04—Filed

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