Acetic Anhydride → HCID 135977804, compound

Participants

Reaction Steps

16.1 g (0.075 mole) of 1-amino-5,5-dimethyl-5,6-dihydropyrazolo[1,5-c]quinazoline are dissolved in 100 ml of pyridine. 80 ml of acetic anhydride are added and the reaction mixture is left to stand at room temperature for 1 day. The crystals separated spontaneously are filtered off and the mother liquor is evaporated. The collected crystals are washed with water and dried. Thus, 16.7 g (82%) of 1-acetamino-5,5-dimethyl-5,6-dihydropyrazolo[1,5-c]quinazoline are obtained. M.p.: 228°-230° C.

Provenance & Evidence