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Keactions with 3,6-diaminothieno[2,3-b]-pyridines: Synthesis and characterization of several new fused pyridine heterocycles
Gad-Elkareem, Mohamed A. M.,Elneairy, Mohamed A. A.,Taha, Adel M.
, p. 405 - 413 (2008/02/12)
6-Aminopyridine-2(1H)thiones 1 reacting with a-halo-compounds 2a-c afforded the alkylthiopyridine derivatives 3a-c which in turn cyclized to the corresponding thieno[2,3-b]pyridine derivatives 4a-c. Several thieno[2,3-b]pyridine derivatives 7, 16, 19, pyr
