Water → HCID 19698441, compound

Participants

Reaction Steps

Water (9 ml) and N,N'-dimethylethylenediamine (0.8 ml, 7.7 mmol) were added to 6-amino-4,5-dichloro-2-methyl-3(2H)-pyridazinone (500 mg, 2.6 mmol) as described in Chemical Pharmaceutical Bulletin, 30, 832 (1982), and the mixture was refluxed under heating for 3 hours. The reaction mixture was concentrated, added with chloroform, washed with water and brine and dried over anhydrous sodium sulfate. The solvent was distilled away and the residue obtained was subjected to silica gel column chromatography (chloroform:methanol=40:1) to give 448 mg of 8-amino-1,2,3,4-tetrahydro-1,4,6-trimethylpyrazino[2,3-d]pyridazin-5(6H)-one.

Provenance & Evidence