Friedel‐Crafts benzylation of benzene derivatives catalyzed by silica and alumina‐supported polytrifluoromethanesulfosiloxane | Zendy

Zhou DaQing | Zendy; Wang ChaoMing | Zendy; Yang JiHuo | Zendy; Huang MeiYu | Zendy; Jiang YingYan | Zendy

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Friedel‐Crafts benzylation of benzene derivatives catalyzed by silica and alumina‐supported polytrifluoromethanesulfosiloxane

Author(s) -

Zhou DaQing,

Wang ChaoMing,

Yang JiHuo,

Huang MeiYu,

Jiang YingYan

Publication year - 2002

Publication title -

polymers for advanced technologies

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.61

H-Index - 90

eISSN - 1099-1581

pISSN - 1042-7147

DOI - 10.1002/pat.169

Subject(s) - friedel–crafts reaction , benzene , catalysis , molar ratio , benzyl chloride , yield (engineering) , chloride , superacid , nuclear chemistry , materials science , acid strength , organic chemistry , chemistry , composite material , zeolite

Inorganic polymer, silica and alumina‐supported polytrifluoromethanesulfosiloxane solid superacids (abbreviated as SiO 2 ‐Si‐ SCF 3 and Al 2 O 3 ‐Si‐ SCF 3 ), have been prepared. The acid strength of superacids are higher than that of 100% H 2 SO 4 . It was found that SiO 2 ‐Si‐ SCF 3 and Al 2 O 3 ‐Si‐ SCF 3 could catalyze Friedel‐Crafts benzylation of benzene and substituted benzenes with benzyl chloride under relatively mild conditions. The yields could amount to 98 and 85%, respectively. The yield was influenced by catalyst concentration, reaction time and benzene/benzyl chloride molar ratios. The catalysts have considerable high stability and could be reused repeatedly without large changes in catalytic activity. Copyright © 2002 John Wiley & Sons, Ltd.

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