The versatility of furfuryl alcohols and furanoxonium ions in synthesis

“Substituted furfuryl alcohols are extraordinarily versatile starting materials in synthesis. They are precursors to furanoxonium ion intermediates which are implicated in the Piancatelli reaction (leading to 2-cyclopentenones) and in the synthesis of novel dihydrofuran-based exo enol ether/cyclic ketal natural products.”…

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Source: http://blog.dalinyebo.com/the-versatility-of-furfuryl-alcohols-and-furanoxonium-ions-in-synthesis/