2-, 3-, 4-Nitropyridine (1a, i, j) and some simple derivatives of 3-nitropyridine (1b-h) undergo dehydromethylamination in a solution of potassium permanganate in liquid methylamine. In the case of 2- and 6-chloro and 6-methoxy derivatives of 3-nitropyridine (1b-d) dechloro- or demethoxy-methylamination occurs as well.
Szpakiewicz, Barbara,Wozniak, Marian
p. 75 - 78
(2007/10/03)
Compounds with antiulcer and antisecretory activity. III. N-substituted imidazolones condensed with nitrogen-containing heteroaromatic rings
The syntheses of imidazo[4,5-b]pyridin-2-ones and -thiones, imidazo [4,5-c]pyridin-2-ones and 7,9-dihydro-8H-purin-8-ones arylated (or heteroarylated) at an imidazolone nitrogen are reported. Only some compounds of the first series have marked antisecreto
Bianchi,Butti,Rossi,et al.
p. 501 - 506
(2007/10/02)
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