期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 55, 期 4, 页码 1368-1371出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201509346
关键词
arenes; biomass; cycloaddition; heterocycles; zeolites
资金
- Netherlands Organization for Scientific Research (NWO)
Renewable aromatics can be conveniently synthesized from furanics by introducing an intermediate hydrogenation step in the Diels-Alder (DA) aromatization route, to effectively block retro-DA activity. Aromatization of the hydrogenated DA adducts requires tandem catalysis, using a metal-based dehydrogenation catalyst and solid acid dehydration catalyst in toluene. Herein it is demonstrated that the hydrogenated DA adducts can instead be conveniently converted into renewable aromatics with up to 80% selectivity in a solid-phase reaction with shorter reaction times using only an acidic zeolite, that is, without solvent or dehydrogenation catalyst. Hydrogenated adducts from diene/dienophile combinations of (methylated) furans with maleic anhydride are efficiently converted into renewable aromatics with this new route. The zeolite H-Y was found to perform the best and can be easily reused after calcination.
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