1: (i) Al, HgCl2, I2, THF, (ii) /BRN= 1905666/ 2: HgSO4*2HgO, H2SO4 / dioxane / Heating 3: H2 / Pd-CaCO3 / methanol 4: Na2CO3 / dioxane / 150 °C View Scheme

1: (i) Al, HgCl2, I2, THF, (ii) /BRN= 1905666/ 2: HgSO4*2HgO, H2SO4 / dioxane / Heating 3: H2 / Pd-CaCO3 / methanol 4: Na2CO3 / dioxane / 150 °C 5: diethyl ether View Scheme

1: (i) Al, HgCl2, I2, THF, (ii) /BRN= 1905666/ 2: HgSO4*2HgO, H2SO4 / dioxane / Heating 3: H2 / Pd-CaCO3 / methanol 4: Na2CO3 / dioxane / 150 °C 5: KBH4 / methanol View Scheme