Methylhydrazine → HCID 57442165, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of diethyl ketomalonate (95 g, 546 mmol) in EtOH (600 mL) (2 L 3-neck flask equipped with thermocouple, N2 line, condenser and mechanical stirrer) was added MeNHNH2 (32 mL, 600 mmol) in one portion at room temperature. The reaction mixture was warmed to 60° C. (internal temperature, heated by a heating mantle) and stirred for 6 hours. The reaction mixture was cooled to room temperature and stirred overnight. The reaction mixture was concentrated under reduced pressure to give the crude material along with solid precipitates that was purified by a silica gel plug (3:2 hexanes:EtOAc) to afford 81 g (74%) of the desired product.

Provenance & Evidence