METHOD FOR OBTAINING 4,4'-DIFORMYLDIPHENYLALKANE Russian patent published in 2016 - IPC C07C45/49 C07C47/546 

FIELD: chemistry.

SUBSTANCE: claimed invention relates to method for obtaining 4,4'-diformyldiphenylalkane, represented by means of the following formula (2), which is suitable as different industrial chemical initial substances and in production of initial substances for medications, agrochemicals, optic and electronic functional materials. Method includes formylation of diphenylalkane, represented by means of the following formula (1), with carbon monoxide in presence of fluorohydrogen and boron trifluoride, in which temperature of formylation reaction constitutes from -50 to 5°C, from 5 to 30 mol of fluorohydrogen are used per 1 mol of diphenylalkane and from 1.5 to 5 mol of boron trifluoride are used per 1 mol of diphenylalkane:

in which R represents alkanediyl group, containing from 1 to 6 carbon atoms, in which R represents alkanediyl group, containing from 1 to 6 carbon atoms.

EFFECT: claimed method makes it possible to obtain target products with high degree of purity and with high output.

6 cl, 1 tbl, 8 ex