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A mild, biomass-friendly route to allylated furans Manufacturers who depend on alkyl and allylic furans can now reach these valuable ingredients through a single, low-waste step that trades cryogenic equipment, hazardous reagents and costly precious metals for gentle heating and cheap, recyclable catalysts. The GreenFuran Direct Allylation method developed by Los Alamos National Laboratory feeds on renewable, biomass-derived alcohols, produces only water as a byproduct and lifts away the catalyst by simple filtration, so operators gain a cleaner process, an easier cleanup and lower input costs at the same time. Crucially, the reaction succeeds on substituted and even multiply substituted furans that older approaches simply could not convert, opening a wider palette of products from one dependable platform. The Challenge The established ways to make alkyl furans — chiefly ortho-lithiation, Friedel-Crafts alkylation or transition-metal-catalyzed C-H functionalization — each carry serious burdens when moved beyond the bench. Ortho-lithiation demands cryogenic temperatures and pyrophoric organolithium reagents that ignite on contact with air, while Friedel-Crafts routes consume stoichiometric quantities of Lewis acids that generate large volumes of waste and complicate cleanup and metal-catalyzed methods rely on expensive metals and ligands and inaccessible starting materials. Problems Solved GreenFuran Direct Allylation answers each of those burdens with a single dehydrative rea

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