反应详情

To a 0° C. solution of 2,6-dichloroaniline (2.00 g) in ethyl acetate (40 mL) is added concentrated hydrochloric acid (12 mL). The reaction is stirred for 10 min. To this solution is added a solution of sodium nitrite (2.55 g) in water (7.5 mL) over 3 min. Upon completion of the addition, the reaction is stirred for an additional 30 min. A solution of sodium azide (2.41 g) in water (8 mL) is added over 5 min. After 30 min, pH 7 buffer (50 mL) is added and the reaction is transferred to a separatory funnel. The layers are separated and the aqueous layer is extracted with ethyl acetate. The organic layers are combined and washed with brine, dried over sodium sulfate, filtered, and concentrated under reduced pressure to give the title compound (2.11 g). 1H NMR (400 MHz, CDCl3) δ 7.3-7.27 (d, 2H), 7.07-7.02 (t, 1H)

1. additionUpon completion of the addition
2. stirringthe reaction is stirred for an additional 30 min
3. waitAfter 30 min
4. additionpH 7 buffer (50 mL) is added
5. customthe reaction is transferred to a separatory funnel
6. customThe layers are separated
7. extractionthe aqueous layer is extracted with ethyl acetate
8. washwashed with brine
9. dry with materialdried over sodium sulfate
10. filtrationfiltered
11. concentrationconcentrated under reduced pressure