Lewis Acid-Catalyzed Propargylic Etherification and Sulfanylation from Alcohols in MeNO2–H2O

Direct scandium- and lanthanum-catalyzed etherifications of propargyl alcohols 1 and 6 in MeNO2–H2O provided propargyl ethers 3, 4 and 7 in high yields. In addition, reactions of 1 and 6 with thiols exclusively yielded the corresponding propargyl sulfides.

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