1: dichloromethane 2: triethylamine / dichloromethane / 12 h / 0 - 20 °C / |Inert atmosphere 3: diisobutylaluminium hydride / dichloromethane / 1 h / -78 °C / |Inert atmosphere 4: chloro-trimethyl-silane / dichloromethane / 9 h / 0 - 20 °C / |Inert atmosphere 5: isopropylmagnesium chloride lithium chloride complex / diethyl ether; tetrahydrofuran / 1.08 h / -78 - 0 °C / |Inert atmosphere 6: palladium 10 on activated carbon; potassium fluoride / methanol / 48 h / 70 °C / |Inert atmosphere; |Microwave irradiation 7: toluene-4-sulfonic acid / acetone / 9 h / 20 °C View Scheme