Synthesis and Properties of a Novel Room-temperature Ionic Liquid Hexaalkylguanidium Salts

Abstract

Abstract: The synthesis and properties of a novel room-temperature ionic liquid hexaalkylguanidium salts 4 and 5 were reported.The reaction of 1,3-dimethyl-2-imidazolidinon with POCl₃and n-BuNH₂afforded to pentaalkyl-guanidine(2), which reacted with CH₃I, generated hexaalkylguanidium(3).The hexaalkylguanidium salts 4 and 5 were synthesized by the reaction of hexaalkylguanidium(3) with KPF₆, AgBF₄ respectively.The results showed that both compounds 4 and 5 were room-temperature ionic liquids.The structures of these compounds were determined by ¹HNMR, ¹³CNMR, IRand MS pectra data.Compounds 4 and 5 were found to have better solublitieSIn organic solvents and better thermal stabilities.

Key words: Room-temperature ionic liquids, Hexaalkylguanidium salts, Synthesis

CLC Number:

O621

TrendMD:

DUAN Hai-Feng, ZHANG Suo-Bo, LIN Ying-Jie, QIU Zhi-Ming, WANG Zong-Mu . Synthesis and Properties of a Novel Room-temperature Ionic Liquid Hexaalkylguanidium Salts[J]. Chem. J. Chinese Universities, 2003, 24(11): 2024.

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Synthesis and Properties of a Novel Room-temperature Ionic Liquid Hexaalkylguanidium Salts

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