Open AccessThe alkylation of indole with benzaldehyde derivatives catalyzed by 1-(4- sulfobutyl)-3-methylimidazolium hydrogene sulfate ion gel
Author(s) -
Nguyen Thi Xuan Trang,
Tran Hoang Phuong
Publication year - 2019
Publication title -
khoa học và công nghệ: tự nhiên
Language(s) - English
Resource type - Journals
ISSN - 2588-106X
DOI - 10.32508/stdjns.v2i1.675
Subject(s) - benzaldehyde , ionic liquid , catalysis , alkylation , yield (engineering) , chemistry , indole test , hydrogen sulfate , solvent , size exclusion chromatography , organic chemistry , materials science , metallurgy , enzyme
The alkylation of indole with benzaldehyde and derivatives catalyzed by 1-(4- sulfobutyl)-3-methylimidazolium hydrogene sulfate ion gel has been developed. The reaction was taken place under solvent-free ultrasonic irradiation afforded the corresponding product in high yield. Ion gel catalysis was formed by sol-gel method. The recovered ionic liquid gel in each reaction which is quite simply achieved by filtration could be reused up to 5 times without any detectable loss of catalytic performance.