反应详情

584 mg (3.103 mmol) of dimethyl 2,2-dimethyl-3-oxobutanedioate were initially charged in 12 ml of ethanol and heated to reflux. Subsequently, 590 mg (2.069 mmol) of 1-(2-fluorobenzyl)-1H-pyrazolo[3,4-d]pyrimidine-3-carboximidohydrazide suspended in 12 ml of ethanol were added and the mixture was boiled under reflux overnight. After cooling, the mixture was filtered, the filtercake was washed with a little ethanol and the filtrate was concentrated. The residue was stirred with 10 ml of acetonitrile. 188 mg of the target compound were obtained (purity 93%; 20% of theory).

1. temperatureheated to reflux
2. additionwere added
3. temperatureunder reflux overnight
4. temperatureAfter cooling
5. filtrationthe mixture was filtered
6. washthe filtercake was washed with a little ethanol
7. concentrationthe filtrate was concentrated