1: 98 percent / TFA / methoxybenzene; ethyl acetate / 24 h / 0 °C 2: 65 percent / PhI(OAc)2; MgO / [Rh2(OAc)4] / CH2Cl2 / Heating View Scheme

trifluoroacetic acid in ethyl acetate; methoxybenzene T=0°C; 24 h;