1.1: Na2S*9H2O / methanol / 10 h / 20 °C 2.1: 7.43 g / HCl / methanol / 1 h / 20 °C 3.1: LiAlH4 / tetrahydrofuran / 1 h / 0 °C 4.1: 9.26 g / PPh3; CCl4 / acetonitrile / 5 h / 20 °C 5.1: NaH / tetrahydrofuran / 0.25 h / 20 °C 5.2: 85 percent / NaI / tetrahydrofuran / 15 h / 20 °C 6.1: 72 percent / urea-hydrogen peroxide; phthalic anhydride / acetonitrile / 1 h / 0 °C 7.1: 69 percent / KOH / 2-methyl-propan-2-ol; CCl4 / 5 h / 20 °C 8.1: 75 percent / Na / ethanol / 10 h / Heating View Scheme

2: K2CO3 / Heating 3: (i) Br2, NaOAc, MeOH, (ii) /BRN= 3593646/ View Scheme

2: K2CO3 / Heating 3: (i) Br2, NaOAc, MeOH, (ii) /BRN= 3597300/ View Scheme

2: K2CO3 / Heating 3: (i) Br2, NaOAc, MeOH, (ii) /BRN= 3592982/ View Scheme