Hydrochloric Acid → HCID 13132141, compound

Participants

Reaction Steps

Three grams (0.01 mole) of 4-(3,4-dimethylphenylhydrazono)-2-phenyl-oxazoline-5-one (R1 =3--CH3, R2 =4--CH3 and R3 =H in the formula II) was suspended in 16 ml of acetone. To the resulting suspension, 1.57 ml of 29% solution of NH4OH (0.013 mole) was added dropwise at room temperature. After refluxing for 25 minutes, heating was stopped and 1.57 ml of concentrated hydrochloric acid was added dropwise. The resulting mixture was again refluxed for 5 minutes. 42 ml of water was then added to the reaction mixture, and obtained crystal was filtered out, washed with acetone containing water and dried. The thus treated crystal was recrystallized from a mixture of 8.8 ml of ethanol and 3 ml of water to obtain 2.25 g of almost colorless crystal, m.p. 169°-170° C., with a yield of 76.9%.

Provenance & Evidence