Abstract
Herein, we report a divanadium-catalyzed decarboxylative alkylarylation of alkenes with hypervalent iodine(III) reagents (HIRs) for the rapid construction of tetracyclic benzimidazo[2,1-a]isoquinolin-6(5H)-ones. This transformation proceeds regioselectively with viarously substituted N-methacryloyl-2-arylbenzoimidazoles and diverse aliphatic acid-derived HIRs under mild conditions. Furthermore, mechanistic investigations revealed that the in situ generated alkyl radical triggered this regioselective 6-exo cyclization.
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