摘要:1-(2-Piperidyl) quinolizidine was obtained from bis (2-pyridyl) methane by three routes. As an intermediate compound 1-(2-pyridyl)-3-ethoxycarbonyl-4-quinolizone, a structural isomer of 1-ethoxycarbonyl-3-(2-pyridyl)-4-quinolizone, was obtained in a good yield.