Table 2. Comparison of Yields for Products 3a-m in Ethanol and Nitromethane and the Charge on the Amino Group of Aromatic Rings in Nitromethane (Q_NH2)^b.

^aRecrystallized yield (1:9, ethyl acetate/hexane).

^bReaction conditions: reaction performed using a 1:1 molar ratio of 1 and 2a-m in a microwave for 20 min at 300 W and 80 °C to give 3a-m.