3-(1-Pyrrolidinyl)crotonophenone → 2,5-Dimethyl-7-phenylpyrazolo[1,5-a]pyrimidine-3-carbonitrile

Participants

Reaction Steps

A mixture of 4.88 g of 5-amino-3-methyl-4-pyrazolecarbonitrile and 8.61 g of 3-(1-pyrrolidinyl)crotonophenone in 50 ml of glacial acetic acid is stirred and heated at reflux for 6 hours. The reaction mixture is cooled and the procedure described in Example 2 is then followed to obtain 7.77 g of the desired product, mp 175°-177° C.

Provenance & Evidence