Transformations of 2-methyl-6-(methylsulfanyl)-5-phenyl-2,3-dihydropyridine in the presence of potassium tert-butoxide: Concurrent aromatization and dimerization processes

Resumo

Aromatization of 2-methyl-6-(methylsulfanyl)-5-phenyl-2,3-dihydropyridine in DMSO in the presence of potassium tert-butoxide is accompanied by dimerization with formation of a mixture of 6-methyl-2-(methylsulfanyl)-3-phenylpyridine (major product), 2-methyl-6-(methylsulfanyl)-5-phenyl-2,3,4,5-tetrahydropyridine, and 2-methyl-4-[2-methyl-6-(methylsulfanyl)-5-phenyl-2,3-dihydropyridin-3-yl]-6-(methylsulfanyl)- 5-phenyl-2,3,4,5-tetrahydropyridine.