919114-09-3Relevant articles and documents
Thieno[2,3-b]pyridine-2-carbohydrazide in polyheterocyclic synthesis: The synthesis of pyrido[3′,2′:4,5]thieno[3,2-d]pyrimidine, pyrido[3′,2′:4,5]thieno[3,2-d][1,2,3]triazine, and pyrazolyl, oxadiazolylthieno[2,3-b]pyridine derivatives
Elneairy, Mohamed A. A.,Gad-Elkareem, Mohamed A. M.,Abdel-Fattah, Azza M.
, p. 1451 - 1466 (2006)
Pyrdine-2(1H)-thione 1 reacted with ethyl chloroacetate 2 to give 2-S-ethoxy-carbonylmethylpyridine derivative 3, which could be cyclized into thieno[2,3-b]-pyridine-2-carbohydrazide derivative 5 by boiling with hydrazine hydrate. The latter compound reac