METHOD OF PRODUCING RACEMIC 1-ETHYL-3,4-BIS[(OXYPHENYL)METHYL]ALUMINACYCLOPENTANES Russian patent published in 2015 - IPC C07F5/06 

FIELD: chemistry.

SUBSTANCE: invention relates to organometallic synthesis and specifically to a method of producing racemic 1-ethyl-3,4-bis[(oxyphenyl)methyl]aluminacyclopentanes of general formula (1a-d) : a) R₁ = R₃ = H, R₂ = OMe; b) R₁ = H, R₂ = R₃ = OMe; c) R₁ = R₂ = R₃ = OMe; d) R₁ = H, R₂,R₃ = OCH₂O. The method includes reacting unsaturated compounds with ethyl aluminium dichloride EtAlCl₂ and magnesium metal in the presence of a Cp₂ZrCl₂ catalyst. The unsaturated compounds used are substituted allyl benzenes (allyl anisole, 4-allyl-1,2-dimethoxybenzene, 5-allyl-1,2,3-trimethoxybenzene, 5-allyl-1,3-benzodioxole). The reaction is carried out in molar ratio Cp₂ZrCl₂:Mg:EtAlCl₂:allyl benzene = (0.8-1.2):20:(25-50):20 at 20-30°C for 72 hours in tetrahydrofuran.

EFFECT: compounds can be used as synthons for fine organic and organometallic synthesis.

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