Abstract
The cyclodehydration of 2-2-(2-ethoxy-6-pyridyl)ethyl cyclohexanone (II) under the influence of p-toluenesulfonic acid, has been demonstrated. Atetnding this reaction is a de-ethylation process leading to the formation of the tricyclic pyridone, III, as well as the tricyclic pyridyl ether, V, and ethyl- p-toluenesulfonate. A five-step synthesis of II, starting with 6-methyl-2-pyridone (VIII) is described.
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