Functionalised pyridinium and ammonium ionic liquids bearing a Michael acceptor are shown to scavenge H2S gas and various thiols, in most cases, without the aid of any added bases. Utilising the effective non-volatility of ionic liquids and ‘tagging’ malodourous substances to an ionic matrix renders them odourless.
H. Q. N. Gunaratne, P. Nockemann and K. R. Seddon, Green Chem., 2014, 16, 2411 DOI: 10.1039/C3GC42463D
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