“…The O-homoallyl derivative 1 e gave the 6-exo product 2 e ( Table 1, entry 4), which was obtained in relatively low yield, together with the directly reduced compound 2 e', thus showing, as expected, that the 6-exo-trig cyclization is less favored than the 5-exo-trig cyclization. [14] The iodoalkyne 1 f gave 2 f through a 5-exo-dig cyclization (52 %; Table 1, entry 5). The method was successfully extended to the reduction of tertiary iodide 1 g (94 %; Table 1, entry 6) and aryl iodides 1 h (96 %; Table 1, entry 7).…”