Efficient conversions of primary and secondary hydroxy-groups into iodo-groups, with inversion, in carbohydrates are described using either triphenylphosphine, iodine, and imidazole or triphenylphosphine and 2,4,5-tri-iodoimidazole in toluene at elevated temperature.
P. J. Garegg and B. Samuelsson, J. Chem. Soc., Chem. Commun., 1979, 978 DOI: 10.1039/C39790000978
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