Synthesis of Propargylic Ethers via Lewis Acid Mediated Nucleophilic Substitution of Propargylic Esters.-In the presence of catalytic TiCl 4 , a novel nucleophilic displacement allows the direct synthesis of propargylic ethers from the corresponding acetates.-(BARTELS, A.; MAHRWALD, R.; QUINT, S.; Tetrahedron Lett. 40 (1999) 33, 5989-5990; Inst. Org. Bioorg. Chem.,
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