化学合成,医药氟罗沙星中间体;生化研究。
医药
合成路线 1(1. 合成:383-50-6)
产率:100%
合成条件:With 4-methyl-morpholine In dichloromethane at 20℃; for 17 h;
实验步骤:向反应容器中加入2-氟乙醇(1.00mL,16.9mmol),对甲苯磺酰氯(3.85g,20.2mmol),N-甲基吗啉(9.30mL,84.5mmol)和CH 2 Cl 2(50mL),进行反应。 在室温下保持17小时。 反应后,将水加入到反应体系中,用乙酸乙酯将产物萃取三次到有机层中。 用饱和盐水洗涤所得有机层并用MgSO 4干燥。 减压浓缩后,浓缩物经Hi-flash硅胶柱色谱纯化(展开溶剂,乙酸乙酯:己烷= 19:81→40:60),得到产物(3.79g(17.2mmol),产率> 100%, 淡黄色液体)。 114-NMR(600MHz,CDCl 3):δ7.81(d,J = 8.4Hz,2H),7.36(d,J = 8.4Hz,2H),4.63-4.60(m,1H),4.55-4.52(m ,1H),4.31-4.27(m,1H),4.26-4.23(m,1H),2.46(s,3H); 计算出的C 9 H 11 F 3 O(Mt)的LRMS(EI):218.0,实测值:218.0。
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