Abstract
A unified catalytic system for tandem Pd-catalyzed carbonylation and C-C cross-coupling via C-H activation was designed. The proposed cascade reaction allows a facile one-step construction of a tetracyclic isoindoloindole skeleton, in which three new C-C/C-N bonds are simultaneously formed. In detail, the carbonylation of aryl dibromides with indoles and C-H activation of in situ formed N-(2'-bromoaroyl)-indole provide biologically relevant 6H-isoindolo[2,1-a]indol-6-ones from commercially available substrates. The aminocarbonylation step in the proposed tandem reaction utilizes glyoxylic acid monohydrate as an environmentally friendly CO surrogate.
Published Version
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