2,3,4,6,11,11a-hexahydro-1H-benzo[b]quinolizine

N-(苄氧基羰基)-1,2,3,4-四氢吡啶

2-piperidin-2-ylacetonitrile

2,2-di(piperidin-2-yl)acetonitrile

5-benzylidene-3,4-dihydro-2H-pyridine