申请人:ETHYL CORPORATION
公开号:EP0281315A2
公开(公告)日:1988-09-07
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。