Acetohydrazide → 1,2,4-Triazolo(3,4-a)phthalazine, 8-chloro-3-methyl-6-phenyl-

Participants

Reaction Steps

A mixture of 1,6-dichloro-4-phenyl-phthalazine (8 g), acetyl hydrazine (4.4 g) and butanol (100 ml) is refluxed for 25 hours. Then the solvent is evaporated off and the residue is washed carefully with a small amount of water and crystallized from ethanol yielding 6 g of the compound of the title. M.p. 236°-38° C.

Provenance & Evidence