Promoting Amination of Furfural to Furfurylamine by Metal‐Support Interactions on Pd/MoO<sub>3−<i>x</i></sub> Catalysts
Zhiyuan Wang, Yinjian Zheng, Jiye Feng, Wenbiao Zhang, Qingsheng Gao
Abstract
Abstract The reductive amination of carbonyl compounds is one of the most straightforward protocols to construct C−N bonds, but highly desires active and selective catalysts. Herein, Pd/MoO 3− x catalysts are proposed for furfural amination, in which the interactions between Pd nanoparticles and MoO 3− x supports can be easily ameliorated by varying the preparation temperature toward efficient catalytic turnover. Thanks to the synergistic cooperation of Mo V ‐rich MoO 3− x and highly dispersed Pd, the optimal catalysts afford the high yield of furfurylamine (84 %) at 80 °C. Thereinto, Mo V species not only acts as the acidic promoter to facilitate the activation of carbonyl groups, but also interacts with Pd nanoparticles to promote the subsequent hydrogenolysis of Schiff base N ‐furfurylidenefurfurylamine and its germinal diamine. The good efficiency of Pd/MoO 3− x within a broad substrate scope further highlights the key contribution of metal‐support interactions to the refinery of biomass feedstocks.