The spirodihydropyridines (2), (7), and (10), which were prepared from the corresponding imines with isonicotinoyl chloride, readily underwent photorearrangement and hydrolysis to give heterocyclic compounds related to alkaloids including naucléfine (9).
T. Naito, O. Miyata and I. Ninomiya, J. Chem. Soc., Chem. Commun., 1979, 517 DOI: 10.1039/C39790000517
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