A (trifluoromethyl)naphthalene which has been prepared by reacting a halonaphthalene with a trifluoroacetate salt in the presence of cuprous iodide and a dipolar aprotic solvent is recovered by (1) replacing the dipolar aprotic solvent in the final reaction mixture with an alkane containing 6-12 carbons, (2) heating the resultant slurry to a temperature sufficient to dissolve the organic ingredients, (3) allowing the inorganic ingredients of the slurry to settle, (4) decanting the organic layer, and (5) cooling to precipitate the (trifluoromethyl) naphthalene.
(1) 在最终反应混合物中用含 6-12 个碳原子的
烷烃取代二极性非烷基溶剂,从而回收通过
碘 化亚
铜和二极性非烷基溶剂存在下使卤代
萘与
三氟乙酸盐反应制备的(三
氟甲基)
萘、(2) 将得到的浆液加热到足以溶解有机成分的温度,(3) 让浆液中的无机成分沉淀,(4) 倾倒有机层,(5) 冷却以沉淀出(三
氟甲基)
萘。