Synthesis of aryl(γ-pyridyl)methanes and their conversion to substituted benzo[g]isoquinolines

New substituted pyridine bases of the aryl(γ-pyridyl)methane type were obtained from 1,2,5-trimethyl-4-piperidone by successive transformations. The new substituted pyridine bases were catalytically dehydrocyclized to di(tri)methylbenzo[g]isoquinolines. © 1977 Plenum Publishing Corporation.