Dimethylformamide → Benzaldehyde, 4-(diphenylamino)-

Participants

Reaction Conditions

Reaction Steps

101.4 g of triphenylamine and 35.5 mL of DMF were placed in a three-neck flask. While stirring and cooling in ice water, 84.4 mL of phosphorus oxychloride was dropped into the flask. The temperature was increased to 95° C. and the mixture was reacted for 5 hours. 4 L of warm water was poured into the flask and the mixture was stirred for one hour. A precipitate was collected and washed in a 1:1 mixture solution of ethanol/water. 4-(N,N-diphenylamino)benzaldehyde was obtained. The yield was 91.5 g (yield rate of 81.0%), and the melting point was 128.6°-130.1° C.

Provenance & Evidence