Abstract
1,4‐Disubstituted 2,3‐epoxy‐1,4‐butanediones were converted to 1,4‐disubstituted 2‐hydroxy‐1,4‐butanediones with SbCl3‐Bu4NI in the presence of Na2S2O3 · 5H2O. The ring opening of terminal epoxides can also be accomplished to afford the corresponding haloalcohol with SbCl3 and tetrabutylammonium halides, Bu4NX (X=Cl, Br, I) under the same reaction conditions.
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