| This thesis divides into three aspects. In this paper, we describe the study on synthesis of polyhydroquinoline/polyhydrobenzopyran derivatives catalyzed by ionic liquids,the synthesis of polyhydrobenzopyran derivatives in ionic liquids and the oxidation reactions of alcohols catalyzed by task-specifical ionic liquids. Firstly, we synthesized various ionic liquids under microwave irradiation and discussed the study on synthesis of polyhydroquinoline/ polyhydrobenzopyran derivatives catalyzed by ionic liquids, the selection of these reactions conditions was investigated and the optimum experimental conditions were found. The synthesis of polyhydroquinoline derivatives was catalyzed by ionic liquids [hmim]BF4 without any solvents at 80-90℃, and the synthesis of polyhydrobenzopyran derivatives was catalyzed by ionic liquids [omim]BF4 at 80-90℃under solvent-free conditions. Secondly, we study the synthesis of 4H-benzo-[b]-pyran derivatives at the room temperature in ionic liquids. The different ionic liquids and the reuse of the ionic liquid [omim]PF6 were discussed. Thirdly, we synthesized three task-specifical ionic liquids with the tempo linked the cation of the ionic liquids and studied their application in the reaction of the oxidation of alcohols. The different functional ionic liquids and the reuse of the ionic liquids [omim]PF6 were discussed. The results showed that the task-specifical ionic liquids with the anion of PF6-not only have the good catalyst activity, but also can recycled in the same time 1h.
|
PDF Full Text Request