3,5-ジクロロ-4'-フルオロベンゾフェノン 化学特性,用途語,生産方法
製造方法
Synthesis of (3,5-Dichlorophenyl)-(4-fluorophenyl)methanone.
3,5-Dichlorobenzoic acid (12.5 g, 65 mmol) was heated at reflux with thionyl chloride for 4 h. After removal of the thionyl chloride, fluorobenzene (5.6 mL, 5.76 g, 60 mmol) and anhydrous aluminum chloride (8.53 g, 64 mmol) were added to the oily residue and the reaction mixture was stirred at 140 °C for 3 h. After cooling to 70 °C, it was poured under vigorous stirring onto ice-water (500 g). The crude product was filtered off, washed with water, and recrystallized from ethanol to give (3,5-Dichlorophenyl)-(4-fluorophenyl)methanone (11.9 g, 73.6 %) as colorless crystals.Mp. 65-67 °C (ethanol);
1 H NMR (CDCl3, 200 MHz, 25 °C): δ 7.85 (2H, dd, J = 8.8 Hz, 4 JHF = 5.5 Hz); 7.61 (2H, d, J = 1.8 Hz); 7.58 (1H, d, J = 1.8 Hz); 7.20 (2H, t, J = 8.8 Hz). IR (KBr): 1663, 1598 cm-1. Anal. Calcd for C13H7Cl2FO (269.10): C, 58.02; H, 2.62; Cl, 26.35. Found: C, 57.80; H, 2.60; Cl, 26.07 %.
3,5-ジクロロ-4'-フルオロベンゾフェノン 上流と下流の製品情報
原材料
準備製品