反应详情

Compound 2 was reacted with 1-fluoro-4-nitrobenzene in the presence of NaH in DMF to give 3-(3,5-dimethoxyphenyl)-2-[4-(4-nitrophenoxy)-phenyl]-acrylic acid (32). Reduction of 32 (10 g, 24 mmol) with zinc dust (15 g, 230 mmol) in acetic acid (100 mL) was accomplished at 120° C. for 15 h, the mixture was cooled to room temperature. Water (250 mL) was slowly added to the reaction mixture. The precipitated product was filtered and washed with water (70 mL) to give crude product. The product was recrystallized from toluene. Yield (33): 9.7 g, 94%.