METHOD OF HYDROFORMYLATION BY MEANS OF DOUBLE OPEN-END BISPHOSPHITE LIGAND Russian patent published in 2015 - IPC C07C45/50 C07C47/02 

FIELD: chemistry.

SUBSTANCE: invention relates to method of hydroformylation and can be used in chemical industry. Claimed is method of hydroformylation for obtaining aldehyde product, including interaction in mode of continuous reaction in liquid phase for hydroformylation of unsaturated olefin compounds, carbon monoxide and hydrogen in presence of mixture of triphenylphosphine and organo-bisphosphite ligand of formula , where R₁ and R₂ represent monovalent aryl radical, containing from 6 to 40 carbon atoms, R₂₈ represents C_1-20-alkyl or cycloalkyl radical or alkoxyradical; and R₂₉ can represent hydrogen atom, C_1-20-alkyl or cycloalkyl radical or alkoxyradical. One of said ligands binds with rhodium with formation of hydroformylation catalyst, with molar ratio of triphenyl to metal and organo-bisphosphite ligand to metal constituting at least 4.

EFFECT: presence of organomonophosphite in said system of catalysts based on Rh/organopolyphosphite complex results in catalysts stabilisation without loss of reaction rate.

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