Реакция #2075730

Уравнение реакции

6-Chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)-5-ethoxy-pyrimidine-4-carboxylic acid

ammonium hydroxide

hydrochloric acid

hydrochloric acid

→

title compound

Выход 69.0%

6-Amino-2-(4-chloro-2-fluoro-3-methoxyphenyl)-5-ethoxy-pyrimidine-4-carboxylic acid

Выход 69.0%

Растворители

water

Условия реакции

Обработка

1. 1
   ДругоеThe reaction mixture was sealed
2. 2
   ЭкстракцияThe product was then extracted with dichloromethane five times
3. 3
   ДругоеThe combined organic layers were then dried
4. 4
   Фильтрацияfiltered
5. 5
   Концентрированиеconcentrated

Методика

6-Chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)-5-ethoxy-pyrimidine-4-carboxylic acid (380 mg, 1.1 mmol) was slurried in water (3.5 mL) and 28% aqueous ammonium hydroxide solution (720 μL, 10.6 mmol) was added. The reaction mixture was sealed and heated at 80° C. for 24 h. The reaction mixture was then acidified to pH 7 via dropwise addition of concentrated hydrochloric acid, and the crude product transferred into a 500 mL separatory funnel containing 100 mL 0.1M hydrochloric acid solution. The product was then extracted with dichloromethane five times. The combined organic layers were then dried, filtered and concentrated to yield the title compound (250 mg, 69% yield) as a tan solid: 1H NMR (DMSO-d6) δ 7.58 (dd, 1H, J=8, 9 Hz), 7.38 (dd, 1H, J=2, 9 Hz), 3.98 (q, 2H, J=7 Hz), 3.90 (d, 3H, J=1 Hz), 1.31 (t, 3H, J=7 Hz).

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