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2 213 091

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IPC

(21) (22)

Application

2002107641/04, 2002-03-25

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Start date

2002-03-25

(22)

Actual filing date

2002-03-25

(45)

Published

2003-09-27

(72)

Inventor

Dzhemilev U.M.Ibragimov A.G.Khafizova L.O.Jalalova D.F.Khanov V.Kh.Kirichenko G.N.

(73)

Holder

Gu Institut Neftekhimii I Kataliza An Rb I Unts Ran

METHOD FOR PREPARING TRANS-3,4-TETRAHYDRO- THIOPHENES Russian patent published in 2003 - IPC

Abstract RU 2213091 C1

FIELD: organic chemistry, chemical technology. SUBSTANCE: invention relates to method for preparing trans-3,4-dialkyltetrahydrothiophenes. Trans-3,4- dialkyltetrahydrothiophenes are prepared by interaction of 1-ethyl-trans-3,4-dialkylalumacyclopentanes with thionyl chloride SOCl₂ in the mole ratio 1-ethyl-trans-3,4-dialkylalumacyclopentanes : SOCl₂ = 10 : (10-14) in hexane solution at temperature 40 C for 6-8 h. Invention allows carrying out the reaction at reduced temperature using thionyl chloride instead toxic benzene. EFFECT: improved and safety preparing method. 1 tbl, 1 ex

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RU 2 213 091 C1

Authors

Dzhemilev U.M.

Ibragimov A.G.

Khafizova L.O.

Jalalova D.F.

Khanov V.Kh.

Kirichenko G.N.

Dates

2003-09-27—Published

2002-03-25—Filed