REACTIONS OF ELEMENTAL SELENIUM WITH 2-ETHYLPYRIDINE

Abstract

Reactions of elemental selenium with 2-ethylpyridine in the presence and absence of KOH have been studied. The reactions were conducted under nitrogen in sealed ampoules, at 200 ^o C. After removing unreacted substrates, the following products were identified by GC-MS: methyl 2-pyridyl ketone 1, 2,3-di-(2-pyridyl)butane 2, 1-(2-pyridyl)-2-[3-(2-ethyl)pyridyl]ethane 3, 1-(2-pyridyl)-[6-(2-ethyl)pyridyl]ethane 4, 1-(2-pyridyl)-1-[5-(2-ethyl)pyridyl]ethane 5, 1-(2-pyridyl)-1-[6-(2-ethyl)pyridyl]ethane 6, 1-(2-pyridyl)-1-[4-(2-ethyl)pyridyl]ethane 7, and 1-(2-pyridyl)-1-[3-(2-ethyl)pyridyl]ethane 8. Among the products two organoselenium compounds (C₁₄H₁₆N₂Se₂) were also detected whose structure could not be established.

Keywords:

• 2-Ethylpyridine
• gas chromatography
• mass spectrometry
• selenium

This work was financially supported by the Polish State Committee for Scientific Research under grant DS/8230-4-0088-3.