1: K2CO3, KI / acetone 2: aq. H2SO4 / acetic acid 3: (i) H2, aq. HCl, Pd-C, (ii) aq. FeCl3 4: K2CO3 / acetone 5: aq. Na2S2O3 / diethyl ether View Scheme

1: K2CO3, KI / acetone 2: aq. H2SO4 / acetic acid 3: (i) H2, aq. HCl, Pd-C, (ii) aq. FeCl3 4: K2CO3 / acetone View Scheme

1: K2CO3, KI / acetone 2: aq. H2SO4 / acetic acid 3: (i) H2, aq. HCl, Pd-C, (ii) aq. FeCl3 4: K2CO3 / acetone 5: aq. Na2S2O3 / diethyl ether 7: aq. FeCl3 / diethyl ether View Scheme