反应详情

A mixture of 81 g of 3-acetyl-4-hydroxybenzonitrile, 48 ml of acetone, 11.8 ml of pyrrolidine and 300 ml of toluene is allowed to stand at 20° for 1 hour, then boiled for 2 hours in a water separator and cooled. After customary working up, 2,2-dimethyl-6-cyano-4-chromanone is obtained, m.p. 119°-120°.

1. temperaturecooled