Haiming Wang, Peng Cui, Gang Zou
Apr 24, 2006
Citations
0
Influential Citations
29
Citations
Journal
Tetrahedron
Abstract
Abstract A temperature-controlled highly selective dimerization of α-methylstyrene to produce 2,4-diphenyl-4-methyl-1-pentene and 1,1,3-trimethyl-3-phenylindan was catalyzed by Bronsted acidic ionic liquid [Hmim]+BF4−. At 60 °C, 2,4-diphenyl-4-methyl-1-pentene was formed in 93% selectivity with >92% conversion under a solvent-free condition while 1,1,3-trimethyl-3-phenylindan could be obtained in 100% selectivity when the reaction temperature was increased to 170 °C. The ionic liquid [Hmim]+BF4− could be reused with almost no loss of activity.