Styrene oligomerization in the presence of catalytic systems based on Pd(acac)2 and BF3OEt2

Abstract

Styrene oligomerization in the presence of Pd(acac)2+PPh3+BF3OEt2 catalytic system (acac -acetylacetonate) has been studied. Styrene conversion at optimum conditions (T = 343 K, B/Pd = 7, P/Pd = 2) was as high as 75,000 mol of Cd-I8 per tool of Pd in 7 h with a selectivity to dimers, mostly 1,3-diphenylbut-l-ene, up to 93%.

Palladium - catalyzed dimerization of propene

“…Isomerization leads to 3-hexene, 2methyl-2-pentene (the common isomerization product of 2-methyl-1-pentene and 4-methyl-2-pentene), and 2,3-dimethyl-2-butene. Palladium β-diketonates and boron trifluoride etherate, BF 3 OEt 2 , based catalyst systems display high activity and selectivity in the oligomerization, isomerization of alkenes, and telomerization of butadiene with amines [5][6][7]. This work concerns with some chemical and kinetic aspects of the dimerization of propene with the Pd(acac) 2 + BF 3 OEt 2 catalyst system to get more insight into the nature of the catalytically active species.…”