Abstract
AbstractDiels‐Alder reaction of 1,3‐diarylisobenzofurans with cyclopenten‐1‐one as well as 2‐cyclohexen‐1‐one in the presence of TMSOTf in DCM at 0 °C furnished 4,5‐diarylbenzo[e]inden‐1‐ones and 6,7‐diarylbenzo[f]α‐tetralones. The benzo[e]inden‐1‐ones/benzo[f]α‐tetralones upon Fischer indolization led to the formation of indeno[b]indoles and dihydronaphtho[a]carbazoles, respectively.
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