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2 220 971

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IPC

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Application

2002101447/04, 2002-01-11

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Start date

2002-01-11

(22)

Actual filing date

2002-01-11

(45)

Published

2004-01-10

(72)

Inventor

Dzhemilev U.M.Ibragimov A.G.Khafizova L.O.Gil'Fanova G.N.Kunakova R.V.Chegodaeva M.F.Sharipova A.Z.

(73)

Holder

Gu Institut Neftekhimii I Kataliza An Rb I Unts Ran

METHOD FOR PREPARING 1-ETHYL-3-ALKYL-4-ALKYLIDENECYCLOHEPTA-2-OXALANES Russian patent published in 2004 - IPC

Abstract RU 2220971 C2

FIELD: organic chemistry, chemical technology. SUBSTANCE: invention relates to method for preparing new organoaluminum compounds of the general formula: where R is CH₃ or n-C₃H₇; R¹ is n-C₆H₁₃ or n-C₈H₁₇ that can be used in fine organic and metalloorganic synthesis and as co-catalysts in processes of oligo- and polymerization of olefins and coupled dienes. Method involves interaction of terminal allenes of the formula: with triethyl- aluminium in the presence of zirconacene dichloride (Cp₂ZrCl₂) as a catalyst under normal conditions in methylene chloride medium for 5 h followed by addition at temperature 5 C of CuCl as a catalyst and aldehyde of the formula RCHO and stirring reaction mass for 6-8 h and maintaining the definite ratio of reagents. The yield of the end product is 66-84%. EFFECT: improved preparing method. 2 cl, 1 tbl, 1 ex

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RU 2 220 971 C2

Authors

Dzhemilev U.M.

Ibragimov A.G.

Khafizova L.O.

Gil'Fanova G.N.

Kunakova R.V.

Chegodaeva M.F.

Sharipova A.Z.

Dates

2004-01-10—Published

2002-01-11—Filed