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Regioselective nucleophilic ring opening of isopropylidene ketals of simple diols or sugars, e.g. I (R = Ac, CH2Ph), by AlMe3 gave the corresponding II (R = H, CH2PH). This reagent offers a new method for selective monoprotection of 1,2-diols. [on SciFinder (R)]
Alkynes are found in a multitude of natural or synthetic bioactive compounds. In addition to the capacity of these chemical motifs to impact the physicochemical properties of a molecule of interest, the well-established reactivity of alkynes makes them ...