ortho-Alkylation of 2-arylindazoles with α-diazocarbonyl compounds
2020
Rao, M.V Krishna | Reddy, K Nagarjuna | Sridhar, B. | Reddy, B.V Subba
2-Arylindazoles undergo a smooth cyclization with α-diazocarbonyl compounds in the presence of 3 mol% Cp*Ir(III) and 10 mol% AgSbF₆ in methanol at 100 °C to produce the corresponding indazolo[2,3-a]quinoline derivatives in good yields. Whereas in the case of α-diazoimidamide, only the ortho-alkylated product was formed without further cyclization.
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