2,6-Bis (aminophenoxy) pyridine and method of preparing the same.

摘要

Novel diamines, 2,6-bis(3-aminophenoxy)pyridine and 2,6-bis(4-aminophenoxy)pyridine, are provided and the method of their preparation is disclosed. These diamines are useful as raw materials for polyimide. These diamines can be prepared by the reaction of 2,6-dichloropyridine or 2,6-dibromopyridine with 3-aminophenol or 4-aminophenol in aprotic polar solvents in the presence of bases. Besides, 2,6-bis(3-aminophenoxy)pyridine can also be prepared by the reaction of 2,6-dichloropyridine or 2,6-dibromopyridine with 3-nitrophenol, followed by reducing resultant 2,6-bis(3-nitrophenoxy)pyridine.