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Hydroxyl Assisted Rhodium Catalyst Supported on Goethite Nanoflower for Chemoselective Catalytic Transfer Hydrogenation of Fully Converted Nitrostyrenes
Author(s) -
Hu Zenan,
Ai Yongjian,
Liu Lei,
Zhou Junjie,
Zhang Gang,
Liu Hongqi,
Liu Xiangyu,
Liu Zhibo,
Hu Jianshe,
Sun Hongbin,
Liang Qionglin
Publication year - 2019
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/adsc.201801611
Subject(s) - chemistry , chemoselectivity , catalysis , selectivity , rhodium , transfer hydrogenation , nitro , combinatorial chemistry , nanoflower , noyori asymmetric hydrogenation , organic chemistry , enantioselective synthesis , ruthenium , alkyl
Control of chemoselectivity is a special challenge for the reduction of nitroarenes bearing one or more unsaturated groups. Here, we report a flower‐like Rh/α‐FeOOH catalyst for the chemoselective hydrogenation of nitrostyrene to vinylaniline over full conversion, which benefits the new functionalized aminostyrene because the multisubstituted aminostyrenes are usually commercially unavailable. This catalyst does not only show desirable selectivity for the vinylanilines, but also exhibits the inertness to various other reducible groups over wide reaction duration. The catalytic selectivity for the reduction of the nitro group towards vinyl group was investigated by the control experiments and FT‐IR analysis. We have found that the abundant hydroxyl groups in the α‐FeOOH may contribute to the improvement of catalytic activity and selectivity. Furthermore, the catalyst exhibits excellent stability and keeps its catalytic performance even after 6 cycles.