METHOD OF PRODUCING 1,3-DIPHENYLBUTENE-1 Russian patent published in 2013 - IPC C07C15/50 C07C15/12 C07C2/32 B01J31/22 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing trans-1,3-diphenylbutene-1 via oligomerisation of styrene in the presence of a catalyst. The method is characterised by that the catalyst used is cationic palladium complexes of general formula [(acac)Pd(L)₂]BF₄ (where acac denotes an acetylacetonate ligand, L is diethylamine, dibutylamine, morpholine) combined with boron trifluoride etherate as a cocatalyst. Components of the catalyst system react at temperature of 25…50°C, atomic ratio B:Pd=5:1. Total conversion of styrene to oligomers can reach 1.9-10⁴ moles styrene per g-at Pd with dimer selectivity of up to 99.9%.

EFFECT: use of the present method enables oligomerisation of styrene to trans-1,3-diphenyl-1-butene with selectivity of up to 98.9% of the overall mixture of reaction products.

1 cl, 3 ex