Journal of Organic Chemistry p. 2792 - 2796 (1983)
Update date:2022-07-30
Topics:
Narula, C. K.
Mak, K. T.
Heck, R. F.
1-Bromo 1,5-dienes, 2-bromo 1,6-dienes, and 2-bromo 1,7-dienes have been found to undergo palladiumtriarylphosphine catalyzed cyclizations in the presence of piperidine to form five- or six-membered ring products in good yields.The major or only cyclic products formed are piperidino- or (piperidinomethyl)cyclopentenes and -cyclohexenes.The five-membered ring products are preferred over the six when there is a choice.
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