38025-75-1Relevant academic research and scientific papers
Reactions of polyhalogenopyridines. 14. Reaction of isomeric dichlorocyanopyridines and pentachloropyridine with potassium ethylxanthate
Sipyagin,Kolchanov,Lebedev,Karakhanova
, p. 1306 - 1314 (1997)
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 processes involving substitution of the chlorine atoms by the ethylxanthate fragment, sometimes accompanied by the loss of COS molecules, were observed instead of heterocyclization.
