Suzuki-Miyaura cross-coupling of free (NH) indazoles is described. The reactions are carried out under microwave irradiation
using various 3-bromoindazoles and boronic acids. Different reaction conditions were investigated and the best results were obtained using
Pd(PPh3)4 and Cs2CO3 in a mixture of 1,4-dioxane/EtOH/H2O at 140 °C under microwave irradiation.
Keywords: Suzuki-Miyaura cross-coupling, Free (NH) indazoles, Microwave irradiation, Palladium-mediated cross-coupling, Boronic acids, Sealed vessel, 3-chloroindazole, Indazoles, Cs2CO3, Pyridin-3-ylboronic acid
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