PROCESS FOR THE PREPARATION OF 2-NITRO-3- AMINOPYRIDINE, AND N,N'-DI-(2-NITRO-3-PYRIDYL)-UREA, WHICH IS FORMED AS AN INTERMEDIATE IN THE REACTION

摘要

Abstract2-Nitro-3-aminopyridine is prepared by nitrating N,N'-di-(3-pyridyl)-urea, with subsequent hydrolysis. N,N'-Di-(2-nitro-3-pyridyl)-urea, which is formed in the course of thereaction as an intermediate, is a new compound. The endproduct of the process, 2-nitro-3-aminopyridine, isprincipally an intermediate in various specialized fields,for example, in the pharmaceutical, dyestuff and plantprotection sectors.