反应详情

温度

5 °C

A solution of 8 g (0.11 mol) of sodium nitrite in 25 ml of water was added dropwise to a solution of 20 g (0.11 mol) of 5-tert-butyl-2-methoxyaniline in 120 ml of water/conc. HCL (1:1) cooled to 5° C. After stirring at 5° C. for 15 min, a solution of 19.1 g (0.11 mol) of potassium iodide in 25 ml of water was added dropwise and the solution obtained was stirred at RT for 4 h. It was extracted several times with DCM, and the separated organic phase was washed with 10% strength NaHSO3 solution and water, dried over Na2SO4, and concentrated. Chromatographic purification of the residue which remained on SiO2 using EA/heptane (1:40) yielded 27 g of the title compound in the form of a pale red oil.

1. customthe solution obtained
2. stirringwas stirred at RT for 4 h
3. extractionIt was extracted several times with DCM
4. washthe separated organic phase was washed with 10% strength NaHSO3 solution and water
5. dry with materialdried over Na2SO4
6. concentrationconcentrated
7. customChromatographic purification of the residue which