Heteropolyacid-catalyzed direct deoxygenation of propargyl and allyl alcohols

Article abstract of DOI:10.1021/jo300889p

The combination of H₃[PW₁₂O₄₀] ?nH₂O (1 mol %) and Et₃SiH led to the direct catalytic deoxygenation of propargyl alcohols, in which proper solvent selection Cl(CH₂)₂Cl vs CF₃CH₂OH was the key to obtaining better product yields. Under similar conditions, the deoxygenation of allyl alcohols proceeded to give thermodynamically stable alkenes with migration of the double bonds in good yields.