Ethyl chloroformate → HCID 15079123, compound

Participants

Reaction Steps

Compound 11 (0.20 g) obtained in Example 11 was dissolved in 5 ml of pyridine, and 0.1 ml of ethyl chloroformate was added to the solution. The resulting mixture was stirred at room temperature for 3 hours and then concentrated. Water was added to the residue, and the crystals precipitated were collected by filtration and dried to give 0.21 g (82%) of 6-(4-ethoxycarbonylamino-quinazolin-7-yl)-4,5-dihydro-5-methyl-3(2H)-pyridazinone (Compound 53).

Provenance & Evidence