lithium bromide in acetone Ambient temperature;

1: 76 percent / sodium hydroxide / dimethylsulfoxide / 0.75 h / 90 °C 2: 66 percent / dimethylformamide / Heating View Scheme

1: 70 percent / lithium bromide / acetone / Ambient temperature 2: 1.) magnesium, 2.) <1,3-bis(diphenylphosphino)propane>nickel(II) chloride / 1.) ether, 2.) ether, reflux, 5 h View Scheme