191014-55-8

基本信息
4-氟-2-甲氧基苯甲腈
BUTTPARK 80\07-22
Benzonitrile, 4-fluoro-2-methoxy- (9CI)
物理化学性质
安全数据
制备方法

450-88-4

544-92-3

191014-55-8
以2-溴-5-氟苯甲醚和氰化亚铜为原料合成2-甲氧基-4-氟苯腈的一般步骤:向含有1-溴-4-氟-2-甲氧基苯(9.0g)的N-甲基吡咯烷酮(100mL,Sure Seal; Aldrich)溶液中加入氰化亚铜(6.6g,73.7mmol,1.8当量; Aldrich)。将反应混合物在180℃下,于无水氮气氛围中搅拌5.5小时。反应完成后,冷却至室温,加入14%的氨水溶液(330mL),继续在室温下搅拌45分钟。用乙醚(100mL×3)萃取反应混合物,合并有机相,依次用稀氨水、稀盐酸和盐水洗涤,然后用无水硫酸镁干燥,浓缩后得到2-甲氧基-4-氟苯腈(5.2g,两步收率85%)。产物为白色固体,其1H NMR(CDCl3,500MHz)数据如下:δ 3.91(3H,s,OMe),6.69(1H,dd,J = 2.3Hz,J = 10.5Hz,Ar-H),6.72(1H,dt,J = 2.5Hz,J = 8.0Hz,Ar-H),7.55(1H,dd,J = 6.5Hz,J = 8.5Hz,Ar-H);13C NMR(CDCl3,125.8Hz)数据如下:δ 56.49, 98.16, 100.06, 100.27, 108.31, 108.50, 115.83, 135.37, 135.46, 163.25, 163.34, 165.47, 167.50。通过乙醚研磨获得分析样品。元素分析计算值(C8H6FNO):C,63.57; H,4.00; N,9.26;实测值:C,63.36; H,3.91; N,9.16。
参考文献:
[1] Patent: US2005/267105, 2005, A1. Location in patent: Page/Page column 67
[2] Patent: EP1510516, 2005, A1. Location in patent: Page/Page column 88
[3] Patent: US2007/111984, 2007, A1. Location in patent: Page/Page column 32-33
[4] Patent: US2007/129379, 2007, A1. Location in patent: Page/Page column 26
[5] Patent: WO2007/64316, 2007, A1. Location in patent: Page/Page column 152