Saito N, Nakamura KI, Shibano S, Ide S, Minami M, Sato Y. Addition of cyclic ureas and 1-methyl-2-oxazolidone to pyridynes: a new approach to pyridodiazepines, pyridodiazocines, and pyridooxazepines.
Org Lett 2013;
15:386-9. [PMID:
23286344 DOI:
10.1021/ol303352q]
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Abstract
Reactions of pyridynes with cyclic urea and 1-methyl-2-oxazolidone were demonstrated. 3,4-Pyridyne and 2,3-pyridyne were reacted with N,N-dimethylimidazolidone, N,N-dimethylpropylene urea, and 1-methyl-2-oxazolidone to give the corresponding pyridodiazepines, pyridodiazocines, and pyridooxazepines, respectively.
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