反应详情

A suspension of 2-amino-4-oxo-3H-indolo[2,3-d]pyrimidine (490 mg, 2.5 mmol) and phosphoryl chloride (7 ml, 75 mmol) in dioxane (13 ml) is heated under reflux for 4 hr, then concentrated in vacuo. The residue is triturated with ethanol, filtered, and the solids washed with 10:1 Ethanol:Ethyl Acetate to give 170 mg (27%) 2-amino-4-chloroindolo[2,3-d]pyrimidine hydrochloride as a grey solid, mp >250 C.

1. temperatureis heated
2. temperatureunder reflux for 4 hr
3. concentrationconcentrated in vacuo
4. customThe residue is triturated with ethanol
5. filtrationfiltered
6. washthe solids washed with 10:1 Ethanol