Acetic Acid → HCID 136308665, compound

Participants

Reaction Steps

To 40 g (0.19 mole) of 1-methyl-pyrazolo[1,5-c]quinazolin-5(6H)-one in a rapidly stirring mixture of 350 g of concentrated sulfuric acid and 100 g of acetic acid is added, dropwise a solution of 100 g of chromic acid in 175 g water and 50 g acetic acid. After 12 hours, the reaction is poured into 2 l. of ice water. The reaction mixture is concentrated, cooled and the title compound filtered off and dried.

Provenance & Evidence