Water → HCID 19973473, compound

Participants

Reaction Steps

##STR5## 13.2 g of indanone, 15 g of pyridine-4-aldehyde and 19 g of p-toluenesulphonic acid were heated to boiling under reflux in a water separator for 5 h in 250 ml of toluene. The resulting precipitate was filtered off with suction after cooling and stirred at room temperature for 30 rain in 10% sodium carbonate solution. The resulting, pale-yellow precipitate was filtered off with suction, washed with water and dried in air. Yield: 19.3 g (87%)

Provenance & Evidence