$ORGN The production of CMF from cellulose was first described in the early 1900s. Currently, various synthetic routes are known in the art to produce CMF from biomass using concentrated hydrochloric acid. For example, U.S. Pat. No. 7,829,732 describes a method of producing CMF from biomass using concentrated hydrochloric acid and 1,2-dichloroethane as a solvent. See also, Szmant & Chundury, J. Chem. Tech. Biotechnol. 1981, 31, 205-212; Liu et al., J. Phys. Chem. A, 2011, 115, 13628-13641. The use of concentrated hydrochloric acid, however, can present several challenges on a commercial scale. For example, use of concentrated hydrochloric acid can cause corrosion of the reactors. Thus, what is needed in the art are commercially viable methods to produce 5-(halomethyl)furfural from biomass, using lower acid concentrations. patents.justia.com/patent/2...