A mixture of bismuth nitrate pentahydrate and potassium aryltrifluoroborate in toluene under microwave heating at 120 °C for 20 min provides an interesting and mild reaction protocol for the synthesis of aryl nitrite. The conversion to aryl nitrites from aryltrifluoroborates without transition metal catalyst and base in high yields is remarkable.

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Potassium Aryltrifluoroborates and Bismuth Nitrate. -Microwave heating of a mixture of aryltrifluoroborates with bismuth nitrate in toluene offers an interesting synthesis of nitrobenzene derivatives without the need of any base or catalyst. -(AL-MASUM*, M.; WELCH, R. L.; Tetrahedron Lett. 55 (2014) 10, 1726-1728, http://dx.

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