Light-emitting device, electronic device, and lighting device
摘要
說明書
When the above synthesis is performed by the Ullmann reaction, X represents a halogen element. As the halogen element, iodine, bromine, or chlorine is preferable. As a catalyst, copper or a copper compound is used. Note that copper(I) iodide or copper(II) acetate is preferably used. Examples of the base include an inorganic base such as potassium carbonate. As a solvent, 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone (DMPU), N-methyl-2-pyrrolidone (NMP), toluene, xylene, 1,3,5-trimethylbenzene, or the like. In the Ullmann reaction, when the reaction temperature is 100° C. or higher, an objective substance can be obtained in a shorter time in a higher yield; therefore, it is preferable to use DMPU, NMP, or 1,3,5-trimethylbenzene each having a high boiling point. In addition, since the reaction temperature is further preferably 150° C. or higher, DMPU is more preferably used.
In the above manner, the organic compound represented by the general formula (G1) can be synthesized.
In this embodiment, a display device including the light-emitting apparatus described in Embodiment 1 will be described.
