三溴氧磷 → 2-(3-(Bromomethyl)phenyl)pyrimidine

HRID 41585

反应方程式

HRID 41585 反应方程式
[N:1]1[CH:6]=[CH:5][CH:4]=[N:3][C:2]=1[C:7]1[CH:8]=[C:9]([CH2:13]O)[CH:10]=[CH:11][CH:12]=1.P(Br)(Br)([Br:17])=O.C([O-])(O)=O.[Na+]>C1COCC1>[Br:17][CH2:13][C:9]1[CH:8]=[C:7]([C:2]2[N:3]=[CH:4][CH:5]=[CH:6][N:1]=2)[CH:12]=[CH:11][CH:10]=1

参与物

5

反应物 3

HCID 24613三溴氧磷HCID 516892碳酸氢钠HCID 24229565(3嘧啶-2吡啶)甲醇

产物 1

HCID 672509062-(3-(Bromomethyl)phenyl)pyrimidine收率 80.5%

试剂、催化剂与溶剂 1

HCID 8028四氢呋喃溶剂

反应条件

温度
60 °C

实验过程

To a stirred solution of (3-(pyrimidin-2-yl)phenyl)methanol [892502-12-4] (2.48 g, 12.92 mmol) in THF (25 mL), POBr3 (4.81 g, 16.79 mmol) was added and the mixture was heated at 60° C. for 90 min. The mixture was cooled to rt, poured into saturated aqueous NaHCO3 solution and extracted with ethyl acetate (2×). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by flash-column chromatography over silicagel (eluent: gradient 5%-40% ethyl acetate/heptane) to yield the title compound (2.59 g, 80%). [1H NMR (400 MHz, DMSO-d6) ♀ ppm 8.92 (d, J=5.0 Hz, 2H), 8.48 (t, J=1.6 Hz, 1H), 8.32 (dt, J=7.7, 1.4 Hz, 1H), 7.58-7.62 (m, 1H), 7.49-7.54 (m, 1H), 7.47 (t, J=4.8 Hz, 1H), 4.82 (s, 2H); LCMS RtA=1.04, [M+H]+=249.2/251.2].

后处理

  1. temperatureThe mixture was cooled to rt
  2. extractionextracted with ethyl acetate (2×)
  3. dry with materialThe combined organic layers were dried over anhydrous Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by flash-column chromatography over silicagel (eluent: gradient 5%-40% ethyl acetate/heptane)

来源与证据

ORD记录
ord-5af76c94f69b496baa9aedebfd8933d8
来源数据集
uspto-grants-2013_09
专利号
US08530648B2

关联笔记

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