“…36 Similarly, the vinyl group at the C3-position of 1 can also be converted into the C3-[(1-hydroxy-2-iodo)ethyl], C3-[(1-methoxy-2-iodo)ethyl] and C3-[(1-ethoxy-2-iodo)ethyl] groups by the I 2 -PIFA system (Scheme 1). 35 Compound 1 was mixed with I 2 (1.2 equiv) and PIFA (0.52 equiv) in 1,2-dichloroethane, followed by stirring at room temperature for 1 h. Then ethylene glycol was added to this solution, and an additional stirring afforded an ethylene glycol adduct 2, possessing a [1-(2-hydroxyethyloxy)-2-iodo]ethyl moiety at the C3-position, in 50% isolated yield.…”