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Remote control: The imidazolyl group in a series of imidazolyl cyclodextrins guides the sulfonylation of a specific hydroxy group in the presence of many others to effect a regioselective 1,22 remote functionalization (see structure; Mess=mesitylenesulfonyl, n=0–2). This process enables the establishment of a novel efficient strategy for the hetero-bifunctionalization and -trifunctionalization of cyclodextrins.
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Yuan et al. (2007) studied this question.
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