反应详情

A mixture of 2,6-bis(trifluoromethyl)quinazolin-4-ol (200 mg, 0.666 mmol, prepared in the previous step), DMF (0.01 mL, 0.129 mmol) and diisopropylethylamine (0.17 mL, 0.986 mmol) suspended in dry DCM (10 mL) and treated dropwise with oxalyl chloride (0.11 mL, 1.26 mmol) under argon. After the addition, the reaction mixture was heated to reflux for 4 hours. After cooling to room temperature, the reaction was quenched by the cautious addition of potassium phosphate dibasic solution (20% w/w) and extracted with dichloromethane. The combined organic layers were washed with brine and dried over Na2SO4 and concentrated to yield the product as a white solid.

1. additionAfter the addition
2. temperaturethe reaction mixture was heated
3. temperatureto reflux for 4 hours
4. customthe reaction was quenched by the cautious addition of potassium phosphate dibasic solution (20% w/w)
5. extractionextracted with dichloromethane
6. washThe combined organic layers were washed with brine
7. dry with materialdried over Na2SO4
8. concentrationconcentrated