4-Bromo-5-methoxyquinoline Chemical Properties

storage temp. 

under inert gas (nitrogen or Argon) at 2-8°C

Appearance

Light yellow to yellow Solid

4-Bromo-5-methoxyquinoline Usage And Synthesis

Synthesis

General procedure for the synthesis of 4-bromo-5-methoxyquinoline from 4-hydroxy-5-methoxyquinoline: 4-hydroxy-5-methoxyquinoline (3.2 g, 18 mmol) was dissolved in DMF (22 ml) and phosphorus tribromide (2.2 ml) was added slowly. The reaction mixture was stirred at room temperature for 2 h. After that, it was slowly poured into water and neutralized with saturated aqueous sodium bicarbonate to pH 7-8. Subsequently, the precipitate was collected by filtration and washed several times with deionized water, and finally dried in vacuum drying oven to give the yellow solid product 4-bromo-5-methoxyquinoline (3.6 g, 85% yield). Mass spectrometric analysis (positive ion electrospray mode) showed m/z 239 [M+H]+.

References

[1] Patent: WO2004/2992, 2004, A1. Location in patent: Page 80
[2] Tetrahedron Letters, 2010, vol. 51, # 20, p. 2685 - 2689

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