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• W2899080997 startingPage "1082" @default.
• W2899080997 abstract "The utilization of lignin as a feedstock to produce valuable chemicals is of great importance. However, it is a great challenge to produce pure chemicals because of the complex structure of lignin. The selective utilization of specific groups on lignin molecules offers the possibility of preparing chemicals with high selectivity, but this strategy has not attracted attention. In this work, we propose a protocol to produce methyl-substituted amines by the selective reaction of the methoxy groups of lignin and aniline compounds. It was found that LiI in the ionic liquid 1-hexyl-3-methylimidazolium tetrafluoroborate could catalyze the reaction efficiently and the selectivity to the N-methylation product could be as high as 98%. Moreover, the lignin was not depolymerized in the reaction. As it was rich in hydroxyl groups, the residual material left over after the reaction was used as an efficient co-catalyst for the cycloaddition of epoxy propane with CO2, using KI as the catalyst." @default.
• W2899080997 created "2018-11-09" @default.
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• W2899080997 date "2019-01-01" @default.
• W2899080997 modified "2023-09-30" @default.
• W2899080997 title "Selective utilization of methoxy groups in lignin for <i>N</i>-methylation reaction of anilines" @default.
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• W2899080997 doi "https://doi.org/10.1039/c8sc03006e" @default.
• W2899080997 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6346405" @default.
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• W2899080997 hasPublicationYear "2019" @default.
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