反应详情

温度

110 °C

2-(5-Chloro-2-nitrophenoxy)-5-methoxybenzoic acid, 50 g, was added to 400 g of polyphosphoric acid, and the mixture stirred at 110° C. for 24 hours. The mixture was poured into 2 liters of water, and the resulting precipitate filtered to afford a light green solid. Recrystallization from dimethylformamide gave the title compound as green needles, mo 249°-251° C.

1. filtrationthe resulting precipitate filtered
2. customto afford a light green solid
3. customRecrystallization from dimethylformamide