Industrial Routes from Sugars and Biomass to CMF and Other 5-(Halomethyl)furfurals

The synthesis of 5-(halomethyl)furfurals (XMFs, X=F, Cl, Br, I), including 5-(chloromethyl)furfural (CMF), 5-(bromomethyl)furfural (BMF), 5-(iodomethyl)furfural (IMF), and 5-(fluoromethyl)furfural (FMF), from biomass represents a pivotal advancement in renewable chemistry and engineering. Harnessing waste biomass as a raw material offers a sustainable alternative to fossil-based resources, mitigating environmental degradation and addressing pressing energy needs. CMF and BMF, characterized by their enhanced stability over the hydroxyl analog, 5-(hydroxymethyl)furfural (HMF), exhibit promise as renewable building blocks for scale-up and commercialization. The surge in research interest, particularly from 2010 to 2024, reflects a growing recognition of XMFs' potential as novel platform chemicals. This review highlights the evolution of XMF synthesis methods, focusing on their transformation from saccharides and lignocellulosic biomass. Mechanistic insights and experimental setups are scrutinized for industrial feasibility and scalability, shedding light on technical challenges and avenues for further research. The analysis underscores the burgeoning significance of XMFs in the transition towards sustainable chemical production, emphasizing the importance of process optimization and mechanistic understanding for commercial deployment. The synthesis of 5-(halomethyl)furfurals (XMFs) from biomass, such as CMF, BMF, IMF, and FMF, marks a significant advancement in renewable chemistry. Utilizing waste biomass as a raw material offers a sustainable alternative to fossil resources, addressing environmental concerns and energy demands. CMF and BMF, known for their stability compared to HMF, hold potential as renewable building blocks for commercialization. Research interest in XMFs has surged, reflecting their emergence as novel platform chemicals. This review examines XMF synthesis methods, emphasizing their transformation from saccharides and biomass. Insights into industrial feasibility and scalability, along with technical challenges and research opportunities, underscore XMFs ` role in sustainable chemical production. image