Journal of Organic Chemistry p. 560 - 563 (1993)
Update date:2022-08-02
Topics:
Ihle, Nathan C.
Heathcock, Clayton H.
A method for the construction of α-methylenecyclopentenones fused to five-membered rings using a palladium catalyst is reported.The procedure involves the formation of ?-allylpalladium intermediates that undergo sequential intramolecular alkyne insertion, carbon monoxide insertion, intramolecular alkene insertion, and β-hydride elimination.Examples of the cyclization are seen in eq 2 and Scheme III.
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