期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 27, 页码 9220-9224出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201904159
关键词
continuous-flow reaction; hydrogenation; hydroquinones; metal nanoparticle catalyst; quinones
资金
- JSPS
- University of Tokyo
- MEXT (Japan), JST
Pt-Au bimetallic nanoparticle catalysts immobilized on dimethyl polysilane (Pt-Au/(DMPSi-Al2O3)) have been developed for selective hydrogenation of quinones to hydroquinones. High reactivity, selectivity, and robustness of the catalysts were confirmed under continuous-flow conditions. Various direct derivatizations of quinones, such as methylation, acetylation, trifluoromethanesulfonylation, methacrylation, and benzoylation were successfully performed under sequential and continuous-flow conditions to afford the desired products in good to excellent yields. Especially, air-sensitive hydroquinones, such as anthrahydroquinones and naphthohydroquinones, could be successfully generated and derivatized under closed sequential and continuous-flow conditions without decomposition.
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