Hydrazine → HCID 20435928, compound

Participants

Reaction Steps

A mixture of 120.8 g (0.4 mol) of diethyl 2-methyl-2-[2-(tetrahydro-2-pyranyloxy)ethyl]-propane-1,3-dioate and 150 ml of anhydrous hydrazine was heated under reflux for 64 hours. The excess hydrazine was removed by distillation and the residue was recrystallized from methanol to give 60.28 g (62%) of 4-methyl-4-[2-(tetrahydro-2-pyranyloxy)-ethyl]-pyrazolidine-3,5-dione having a melting point of 179°-180° C.

Provenance & Evidence