Temperature-controlled highly selective dimerization of α-methylstyrene catalyzed by Brönsted acidic ionic liquid under solvent-free conditions

Haiming Wang; Peng Cui; Gang Zou; Fan Yang; Jie Tang

doi:10.1016/j.tet.2006.02.025

Temperature-controlled highly selective dimerization of α-methylstyrene catalyzed by Brönsted acidic ionic liquid under solvent-free conditions

Haiming Wang
, Peng Cui
, Gang Zou
, Fan Yang
, Jie Tang^*

^*Corresponding author for this work

School of Chemistry and Molecular Engineering

East China Normal University

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

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 Brönsted 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.

Original language	English
Pages (from-to)	3985-3988
Number of pages	4
Journal	Tetrahedron
Volume	62
Issue number	17
DOIs	https://doi.org/10.1016/j.tet.2006.02.025
State	Published - 24 Apr 2006

Keywords

Brönsted acidic ionic liquid
Dimerization
α-Methylstyrene

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10.1016/j.tet.2006.02.025

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title = "Temperature-controlled highly selective dimerization of α-methylstyrene catalyzed by Br{\"o}nsted acidic ionic liquid under solvent-free conditions",

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 Br{\"o}nsted 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.",

keywords = "Br{\"o}nsted acidic ionic liquid, Dimerization, α-Methylstyrene",

author = "Haiming Wang and Peng Cui and Gang Zou and Fan Yang and Jie Tang",

year = "2006",

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day = "24",

doi = "10.1016/j.tet.2006.02.025",

language = "英语",

volume = "62",

pages = "3985--3988",

journal = "Tetrahedron",

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TY - JOUR

T1 - Temperature-controlled highly selective dimerization of α-methylstyrene catalyzed by Brönsted acidic ionic liquid under solvent-free conditions

AU - Wang, Haiming

AU - Cui, Peng

AU - Zou, Gang

AU - Yang, Fan

AU - Tang, Jie

PY - 2006/4/24

Y1 - 2006/4/24

N2 - 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 Brönsted 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.

AB - 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 Brönsted 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.

KW - Brönsted acidic ionic liquid

KW - Dimerization

KW - α-Methylstyrene

UR - https://www.scopus.com/pages/publications/33645968949

U2 - 10.1016/j.tet.2006.02.025

DO - 10.1016/j.tet.2006.02.025

M3 - 文章

AN - SCOPUS:33645968949

SN - 0040-4020

VL - 62

SP - 3985

EP - 3988

JO - Tetrahedron

JF - Tetrahedron

IS - 17

ER -

Temperature-controlled highly selective dimerization of α-methylstyrene catalyzed by Brönsted acidic ionic liquid under solvent-free conditions

Abstract

Keywords

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