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Glycosyl halides serve as effective alkyl halides for room temperature Negishi cross-coupling reactions using functionalized alkyl zinc reagents. The catalyst for these reactions is in situ generated (PyBox)NiCl2. The functional group tolerance on the zinc reagent is typically high, and both benzyl and ester protecting groups on the carbohydrate are tolerated. Anomer selectivities are modest for glucosyl halides but high for mannosyl halides.
Gong et al. (Tue,) studied this question.