2-CYANOETHANETHIOAMIDE IN HETEROCYCLIC SYNTHESIS: NOVEL SYNTHESIS OF THIENO[2,3-B]PYRIDINE, PYRAZOLO[3,4-B]PYRIDINE AND PYRIDOPYRAZOLO- 1,2,4-TRIAZINE DERIVATIVES
作者:Mohamed A.A. Elneairyi、Azza M. Abdel-fattah
DOI:10.1080/10426500108040253
日期:2001.8
Abstract Several new synthesis of thieno[2.3-blpyridine, pyrazolo[3,4-b[pyridine and pyridopyrazolo-1,2,4-triazine derivatives via the reactions of pyridinethiones with halogenated compounds, hydrazine hydrate and active methylene compounds.
α,β-Unsaturated Nitriles in Heterocyclic Synthesis. Novel Synthesis of Pyridines and Thieno[2,3-<i>b</i>]pyridine Derivatives
作者:Galal E. H. Elgemeie、Hassan A. Elfahham、Hesham A. Nabey
DOI:10.1246/bcsj.61.4431
日期:1988.12
reacts with ethyl acetoacetate and acetylacetone to give the corresponding 3-cyano-2(1H)-pyridinethione derivatives, which can be alkylated at sulfur atom and cyclized into the corresponding thieno[2,3-b]pyridine derivatives.