Hydrochloric Acid → HCID 135875967, compound

Participants

Reaction Conditions

Reaction Steps

500 mg (123 mmol) of ethyl(3-{3-[4-(N-hydroxycarbamimidoyl)phenyl]-6-oxo-6H-pyridazin-1-ylmethyl}phenyl)carbamate are dissolved in 20 ml of DMF, and 300 μl of pyridine are added. 128 μl (1.35 mmol) of ethyl chloroformate are subsequently added, and the solution is stirred at 100° C. for 24 h. 10 ml of 1 N HCl and water are added to the reaction mixture. The batch is evaporated to dryness, ethyl acetate is added, and the mixture is extracted with water. The organic phase is dried over sodium sulfate, evaporated to dryness and purified by means of preparative HPLC.

Provenance & Evidence