Visible-Light-Mediated Decarboxylative Tandem Carbocyclization
of Acrylamide-Attached Alkylidenecyclopropanes: Access to Polycyclic
Benzazepine Derivatives
Posted on 2020-06-17 - 16:10
A visible-light-mediated
decarboxylative tandem carbocyclization
of acrylamide-tethered alkylidenecyclopropanes with phenyliodine(III)
diacetate and various aliphatic acids has been reported in this paper.
An alkyl radical in situ generated from phenyliodine(III) dicarboxylates
upon visible-light irradiation catalyzed by fac-Ir(ppy)3 adds to the less hindered central carbon of alkylidenecyclopropane
to initiate the tandem annulation, generating tetracyclic benzazepine
derivatives in moderate to good yields with broad substrate scope
under mild conditions.
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Zhang, Xiao-Yu; Ning, Chao; Long, Yong-Jie; Wei, Yin; Shi, Min (2020). Visible-Light-Mediated Decarboxylative Tandem Carbocyclization
of Acrylamide-Attached Alkylidenecyclopropanes: Access to Polycyclic
Benzazepine Derivatives. ACS Publications. Collection. https://doi.org/10.1021/acs.orglett.0c01856