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

Details 2,6-bis(aminophenoxy)pyridine and method of preparing the same 2,6-bis(aminophenoxy)pyridine and method of preparing the same

C - Chemistry, Metallurgy

07

D

402/221, 260/297

C07D 213/69 (2006.01) C08G 59/50 (2006.01) C08G 73/10 (2006.01)

Patent

CA 1290341

2,6-BIS(AMINOPHENOXY)PYRIDINE AND METHOD OF PREPARING THE SAME ABSTRACT 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-dichloro- pyridine 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-nitro- phenol, followed by reducing resultant 2,6-bis(3-nitrophenoxy)pyridine.

531807

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