p-Toluenesulfonic acid → HCID 178456629, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of (1-isopropyl-6-oxo-1,6-dihydro-3-pyridazinyl) (oxo)acetaldehyde oxime (11.16 g), aminomalononitrile (13.6 g) and p-toluenesulfonic acid (10.2 g) in 2-propanol (200 ml) was stirred at 50° C. for 3 hours. Water, aq. NaHCO3 and EtOAc were added to the reaction mixture to give a pale yellow precipitate. The precipitate was collected by filtration to obtain 3-amino-6-(1-isopropyl-6-oxo-1,6-dihydro-3-pyridazinyl)-2-pyrazinecarbonitrile 4-oxide (3.84 g) as white powder.

Provenance & Evidence