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Unorthodox cascade reaction of arynes and N -nitrosamides leading to indazole scaffolds.

Popuri SureshbabuVinod BhajammanavarVenkata Surya Kumar ChoutipalliVenkatesan SubramanianMahiuddin Baidya
Published in: Chemical communications (Cambridge, England) (2022)
An unusual cascade annulation of arynes with N -alkyl- N -nitrosamides is developed by leveraging aryne σ-insertion and C(sp 3 )-H bond functionalization strategies under transition-metal-free conditions at ambient temperature, offering functionalized indazoles in high yields and regioselectivity. The protocol is scalable and exhibits a broad substrate scope. The reaction mechanism is also studied with DFT calculations.
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