HCID 86736598, compound → HCID 333056, compound

Participants

Reaction Steps

Thirty grams of 1-2 diphenyl 4-oxo pentane carbonitrile obtained in the course of the first stage are dissolved in the hot state in 270 ml of alcohol at 95° GL. Then 90 ml of concentrated sulphuric acid are added. The reaction mixture is heated under reflux for 6 hours. After cooling it is extracted at least 4 times with 200-100-100-100 ml of CH2Cl2 -- ether (50:50), until almost complete decolorization of the aqueous phase has occured.

Provenance & Evidence