1: 76 percent / CBr4, Ph3P / CH2Cl2 / 1 h / Ambient temperature 2: 1.) K2CO3, Bu4NBr / 1.) toluene, 100 deg C, 3 h, 2.) toluene, 40 deg C, 14 h View Scheme

tetrabutylammomium bromide; potassium carbonate 1.) toluene, 100 deg C, 3 h, 2.) toluene, 40 deg C, 14 h; Yield given. Multistep reaction;