H. J. Hertog
Sep 2, 2010
Citations
0
Influential Citations
8
Citations
Journal
Recueil des Travaux Chimiques des Pays-Bas
Abstract
A description is given of the preparation and proof of the structure of nine brominated 2-amino- and of three brominated 4-aminopyridines. A survey is given of these two groups of pyridine derivatives, all the possible members of which are now known. In connection with the preparation of brominated aminopyridines by the action of ammonia on bromopyridines, the reactivity of the bromine atoms towards ammonia is discussed. Finally, in connection with one of the above-mentioned preparations, an improved procedure is given for the synthesis discovered by Errera of 2,4-dihydroxypyridine-4-carboxylic acid ethyl ester.