Elemental Iodine - an overview | ScienceDirect Topics
The adduct of triphenylphosphine with elemental iodine (Ph 3 PI 2) is a classic reagent used to convert alcohols cleanly and with inversion to iodides <1996TL949>.Addition of imidazole is well known to promote this conversion with high yields <1996TL1913, 1997JOC784, 2000JA11799, 2000JA4984, 2000S1930, 2001MI18, 2001MI40, 2001MI463, 2000MI2723, 2002OL1447>.