Chemistry of Heterocyclic Compounds p. 99 - 103 (1990)
Update date:2022-08-03
Topics:
Krauze, A. A.
Liepin'sh, E. E.
Dubur, G. Ya.
Condensation of 2-arylidene-1,3-indandiones with cyanothioacetamide in the presence of piperidine, followed by treatment with alkyl halides, has given partially hydrogenated 2-alkylthio-5-oxoindeno<1,2-b>-pyridines, the oxidation, interconversion, and Thorpe cyclization of which to give a novel heterocyclic system, indeno<1',2':6,5>pyrido<2,3-b>thiophene, have been examined.
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