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In the presence of a catalytic amount of trityl perchlorate, 1-O-acetyl ribose stereoselectively reacts with silylated nucleophiles, such as silyl enol ether, allylsilane, and trimethylsilyl cyanide, to give the corresponding α-C-ribofuranosides in excellent yields.
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Mukaiyama et al. (1984) studied this question.
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