Investigation of the Intermolecular Pauson-Khand Reaction of Various 1-Alkynes with Cyclic exo-methylene Compounds
摘要:
Intermolecular Pauson-Khand reaction of various 1-alkynes with 4-exo-methylenepiperidine and -cyclohexane derivatives to give corresponding spirocyclopentenones was investigated. The reaction of m- and p-substituted arylalkynes furnished corresponding spirocyclic compounds in good yields, while that of o-substituted arylalkynes and 1-hexyne proceeded in nil to moderate yield.
Intermolecular Pauson-Khand reaction of various 1-alkynes with exo-methylene-piperidine and -cyclohexane derivatives was examined to give the title compounds in moderate to good yields.