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2 250 892

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IPC

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Application

2003114593/04, 2003-05-16

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Start date

2003-05-16

(22)

Actual filing date

2003-05-16

(45)

Published

2005-04-27

(72)

Inventor

Dzhemilev U.M.Ibragimov A.G.Khafizova L.O.Giljazev R.R.D'Jakonov V.A.Majstrenko V.V.

(73)

Holder

Gu Institut Neftekhimii I Kataliza Akademii Nauk Respubliki Bashkortostan I Unts Ran

METHOD FOR PRODUCTION OF 1,3,4-TRIALKYLCYCLOPENTANE-1-OLS Russian patent published in 2005 - IPC

Abstract RU 2250892 C2

FIELD: organic chemistry, organic synthesis, paint-vehicle production.

SUBSTANCE: invention relates to new method for production of 1,3,4-trialkylcyclopentane-1-ols of general formula 1 , wherein R is n-C₄H₉, n-C₆H₁₃, R' is CH₃, C₂H₅, useful in production of paint-vehicle production, high effective antiscoring and antiwear additives for oils, bioactive compounds, etc. Claimed method includes interaction of alpha-olefins of general formula RCH=CH₂, wherein R is as described above, with ethylaluminum dichloride EtAlCl₂ and magnesium in ratio RCH=CH₂:EtAlCl₂:Mg of 10:(5-7):(5-7) in presence of zirconacene dichloride Cp₂ZrCl₂ as catalyst in molar ratio Cp₂ZrCl₂/alpha-olefin of 0.03-0.07; in argon atmosphere, at room temperature and ambient pressure in tetrahydrofuran medium, followed by addition into reaction mass nickel chloride phosphine complex [NiCl₂.2Ph₃P] in molar ratio [NiCl₂.2Ph₃P]/alpha-olefin of 0.08-0.12, and carboxylic acid ethyl ester R'CO₂Et in triple molar excess expressed as EtAlCl₂. Target product yield after hydrolysis of reaction mass is 50-74 %.

EFFECT: method of increased yield; products for organic synthesis of improved quality.

1 tbl, 1 ex

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RU 2 250 892 C2

Authors

Dzhemilev U.M.

Ibragimov A.G.

Khafizova L.O.

Giljazev R.R.

D'Jakonov V.A.

Majstrenko V.V.

Dates

2005-04-27—Published

2003-05-16—Filed