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2005
Pyridine derivatives
R 0380
Reductive Acylamination of Pyridine N-Oxide with Aminopyridines and Their
Derivatives. — Reactions of pyridine N-oxide (I) with 2- and
37- 136 N-p-Tolylsulfonyl
3-aminopyridines as well as their N-tosyl derivatives in alkaline medium in the presence of Tos-Cl affords the corresponding N-tosylated dipyridylamines [cf. (V), (VIII)]
as a result of reductive acylamination. Similar reactions of pyridine N-oxide with
4-aminopyridine or its N-tosyl derivative furnish N,N-bis(tosyl)aminopyridine (X) and
no reductive aminoacylation product. — (SOLEKHOVA, M. A.; KURBATOV, Y. V.;
Russ. J. Org. Chem. 41 (2005) 1, 128-130; Alisher Navoi Samarkand State Univ.,
Samarkand 703004, Uzbekistan; Eng.) — C. Hettrich
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