Methylhydrazine → HCID 22105867, compound

Participants

Reaction Conditions

Reaction Steps

Triethylamine (1.44 g) and methylhydrazine (1.44 g) were added to a solution of 3.2 g of 4-ethyl-5-methanesulfinyl-7-oxo-4,7-dihydropyrazolo[1,5-a]pyrimidine-6-carbonitrile in 100 ml of ethanol and stirred at 60° C. for 30 minutes. The reaction mixture was cooled and the crystals precipitated were collected by filtration and sequentially washed with ethanol, methanol and diethyl ether to provide 1.9 g of the title compound as colorless crystals. The structure and melting point of the compound obtained are shown in Table 1.

Provenance & Evidence