反应详情

A solution of 1.64 g of 2-butynoic acid in 46 ml of tetrahydrofuran was cooled in an ice bath. A 2.34 ml portion of isobutyl chloroformate followed by a 4.13 ml portion of N-methyl morpholine were added. After about 10 minutes, this was poured into a solution of 6-amino-4-chloroquinazoline in 46 ml tetrahydrofuran. This mixture was stirred at room temperature for 2 hours. The mixture was poured into a mixture of brine and saturated sodium bicarbonate and extracted with ether. The ether solution was dried over magnesium sulfate and filtered. The solvent was removed giving [4chloro-6-quinazolinyl]-2-butynamide as colored oil that was used in the next step without additional purification.

1. additionwere added
2. extractionextracted with ether
3. dry with materialThe ether solution was dried over magnesium sulfate
4. filtrationfiltered
5. customThe solvent was removed