Demethylation of organosolv lignin mediated by indium triflate in water

Podschun, Jacob; Saake, Bodo GND; Lehnen, Ralph GND

The properties of lignin determine the potential applications in new polymer composite materials. In order to produce value added products from lignin, highly reactive lignin types would have significant advantages. One approach to enhance the reactivity of lignins towards electrophiles and nucleophiles is the conversion of methoxyl groups into hydroxyl groups. Here, we present a method for the demethylation of lignin using the watertolerant Lewis acid indium triflate, and compared conventional heating to a microwave-assisted approach.

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Podschun, Jacob / Saake, Bodo / Lehnen, Ralph: Demethylation of organosolv lignin mediated by indium triflate in water. 2016.

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