Objective: To select better synthetic conditions with ionic liquid as reaction medium for the environment-friendly synthesis of sorafenib. Methods: 4-(4-Aminophenoxy)-N-methyl-2-pyridine formamide and 4-chloro-3-( trifluoromethyl) phenylisocyanate were prepared in the ionic liquid [EMIM]BF4,respectively. Sorafenib was synthesized by reaction of aforementioned intermediates. The effects of reaction temperature,reaction time,feeding order,and the circulation use of ionic liquid on the yield of sorafenib were ...