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The reductive cleavage of 4,6‐O‐arylmethylene acetals of hexopyranosides is an effective method for the regioselective formation of a benzyl‐type ether at either the C‐4 or the C‐6 hydroxyl group. The compatibility of this method with Ley's butane diacetal (BDA) protection was studied. 4,6‐O‐(2‐Naphthyl)methylene, benzylidene, and p‐methoxybenzylidene acetals were introduced to 2,3‐O‐BDA‐protected...
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