反应详情

0.1 g (0.33 mmol) of 4-thiophene-2-carbonyl-2H-pyrazol-3-ylamine and 0.063 g (0.33 mmol) of N-[3-[3-(dimethylamino)-1-oxo-2-propenyl]phenyl]-N-2-propynyl-methanesulfonamide were dissolved in 10 ml of glacial acetic acid. After refluxing for 8 hours, the solvent was removed by reduced pressure distillation. To the resultant residue 10 ml of dichloromethane and 10 ml of a saturated solution of sodium bicarbonate were added. The two layers were separated, and the aqueous layer was washed with 10 ml of dichloromethane. The organic layers were washed with 10 ml of water and dried over magnesium sulfate. The dichloromethane layer was evaporate to dryness to yield an oil which, in the presence of ethyl acetate gave a yellow solid, 111 mg (yield=78%) N-2-propynyl-N-{3-[3-(thiophene-2-carbonyl)-pyrazolo[1,5-a]pyrimidin-7-yl]-phenyl}-methanesulfonamide.

1. temperatureAfter refluxing for 8 hours
2. customthe solvent was removed by reduced pressure distillation
3. additionTo the resultant residue 10 ml of dichloromethane and 10 ml of a saturated solution of sodium bicarbonate were added
4. customThe two layers were separated
5. washthe aqueous layer was washed with 10 ml of dichloromethane
6. washThe organic layers were washed with 10 ml of water
7. dry with materialdried over magnesium sulfate
8. customThe dichloromethane layer was evaporate to dryness
9. customto yield an oil which