Reactions of polyhalogenopyridines. 14. Reaction of isomeric dichlorocyanopyridines and pentachloropyridine with potassium ethylxanthate

…, VV Kolchanov, AT Lebedev, NK Karakhanova

Index: Sipyagin; Kolchanov; Lebedev; Karakhanova Chemistry of Heterocyclic Compounds, 1997 , vol. 33, # 11 p. 1306 - 1314

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Abstract

Abstract The reactions of isomeric tetrachlorocyanopyridines with potassium ethylxanthate were studied. It was found that tetrachloro-2-cyanopyridine was converted successively into 4-mono-and then 3, 4-bisethylxanthate derivatives. In the presence of potassium ethylxanthate the last derivative undergoes intramolecular cyclization with the formation of derivatives of 1, 3-dithiolo [4, 5-c] pyridine. In the case of other initial polychloropyridines ...