Green synthesis of δ-lactam from biomass-derived 4-hydroxy-6-methylpyridin-2(1H)-one. Issue 5 (9th February 2023)

• Record Type: Journal Article
• Authors: Wang, Yaqin; Chen, Bingfeng; Wu, Haihong; Mei, Xuelei; Zhang, Kaili; Zheng, Bingxiao; Han, Wanying; Xu, Jiao; He, Mingyuan; Han, Buxing
• Is Part Of: Green chemistry. Volume 25:Issue 5(2023)
• Page Start: 1835
• Page End: 1841
• Publication Date: 2023-02-09
• Subjects: Environmental chemistry -- Industrial applications -- Periodicals; Environmental management -- Periodicals; 660
• DOI: 10.1039/d2gc04382c
• Languages: English
• ISSNs: 1463-9262

Abstract

Abstract : The sustainable route for δ-lactam (6-methylpiperidin-2-one: MPO) production has been demonstrated through transfer hydrogenation/hydrogenolysis of aminolysis product of biomass-derived triacetic acid lactone (TAL) with bimetallic Ni-Ru catalyst. Abstract : Hydrodeoxygenation is usually an essential step for biomass valorization owing to its highly oxygenated nature, and the catalytic transfer hydrogenation provides a promising alternative for hydrodeoxygenation of biomass feedstocks because of its feasibility and safety. Herein, a novel and sustainable route for δ-lactam production, which was previously produced from non-renewable fossil raw materials via stoichiometric reactions or catalytic reactions, has been demonstrated through catalytic transfer hydrogenation/hydrogenolysis of 4-hydroxy-6-methylpyridin-2(1 H )-one (HMPO), which can be easily obtained from biomass-derived triacetic acid lactone (TAL). The Ni–Ru bimetallic catalysts supported on a carbon support had excellent catalytic performance, and the desired product could reach 83.5%, which was much higher than that obtained from other bimetallic or monometallic catalysts and superior to commercial catalysts. The Ru 0 /RuO x ratios, which can be tuned by the introduction of Ni species in the bimetallic catalysts, played a crucial role in the catalytic system. The Ni–Ru/C catalyst also exhibited good catalytic recyclability.