HCID 20312869, compound → HCID 20312844, compound

Participants

Reaction Steps

10.0 g of 1,3-dimethyl-5-phenyl-4-(1-benzoyl-2-imidazolin-2-yl)aminopyrazole are heated to boiling in methanol under reflux for 6 hours. The solvent (methanol) is distilled off in vacuo, and the residue is twice recrystallized from isopropyl alcohol to yield 5.7 g (80.2% of theory) of 1,3-dimethyl-5-phenyl-4-(2-imidazolin-2-yl)aminopyrazole, mp 232° to 234°. The mixed melting point with the product obtained in accordance with Example 8 shows no depression.

Provenance & Evidence