855785-75-0Relevant articles and documents
Synthesis and characterization of sulfonyl-functionalized ionic liquids
Du, Zhengyin,Li, Zuopeng,Deng, Youquan
, p. 1343 - 1349 (2005)
Novel sulfonyl-functionalized ionic liquids (SFIL) with -SO3H and -SO2Cl groups have been designed, synthesized, and characterized. Being strong acidic substances, these ionic liquids have great potential as media and catalysts in ma
Functional Ionic Liquids as Efficient and Recyclable Catalysts for the Methylation of Formaldehyde with Aromatics
Song, Heyuan,Jin, Fuxiang,Jin, Ronghua,Kang, Meirong,Li, Zhen,Chen, Jing
, p. 1264 - 1272 (2016/07/06)
Abstract: Methylation of formaldehyde with various aromatics under functional ionic liquids catalysis has been developed. Among the ionic liquids investigated, triphenyl-(4-sulfobutyl)-phosphonium triflate ([TTPBs][CF3SO3]) showed high activity and afforded excellent yields of diarylmethane derivatives. A mechanism for the catalytic performance of [TTPBs][CF3SO3] is proposed. Besides, the catalyst can simply be separated from the reaction mixture by centrifugation and be recycled ten times without noticeable loss of activity. Graphical Abstract: Diarylmethane derivatives were successfully synthesized from the methylation of formaldehyde with aromatics using efficient and recyclable functional ionic liquids as catalysts, excellent yields and selectivities were obtained under solvent free conditions. The catalyst was reused at least ten consecutive recycles without noticeable loss in its catalytic activity. Meanwhile, the usability of catalyst was explored.[Figure not available: see fulltext.]
Novel acidic ionic liquids as efficient and recyclable catalysts for the cyclotrimerization of aldehydes
Song, Heyuan,Chen, Jing,Xia, Chungu,Li, Zhen
experimental part, p. 266 - 273 (2011/10/31)
A mild, efficient, and ecofriendly procedure for cyclotrimerization of aldehydes was realized by using a series of novel Brnsted acidic ionic liquids (BAILs) consisting of double-SO3H groups in cations as catalysts. Good conversion of aldehydes and selectivity of trialkyl-1,3,5-trioxanes were achieved by using 1mol% of BAILs. In addition, the catalyst system could be recycled and reused at least eight times without apparent loss of activity. Taylor & Francis Group, LLC.