| Popis: |
A study of the reaction of the elemental sulfur with 4-picoline is reported. The process was carried out at the boiling point of the 4-picoline under argon. After removing unreacted solids, the reaction products were identified by means of LC, GC, and GC-MS. The following products have been identified: 1,2-di[4-pyridyl]-ethane, 1,2-di[4-pyridyl]-ethene, 1,2,3-tri[4-pyridyl]-propane, tetra[4-pyridyl]-thiophene, E and Z isomers of 1,2,3-tri[4-pyridyl]-propene, 6-[4-pyridyl]-thieno[3,2-clpyridine and 10-[4-pyridyl]-pyrido[3″4″:5′,4′]cyclopenta[2′,3′:4,5] thieno[2,3-clpyridine. Radical mechanisms for the reactions have been proposed. The catalytic effect of sodium hydroxide on this reaction has also been confirmed as well as the mechanism of the catalysis has been suggested. This study corroborates suggestions concerning the mechanisms of formation of the heterocyclic nitrogen- and sulfur-containing compounds from an organic matter under geological conditions. |
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