Hydrochloric Acid → HCID 258700, compound

Participants

Reaction Steps

A mixture of 24.0 parts of the compound of formula ##STR18## 25.8 parts of p-phenylbenzaldehyde-anile and 50.0 parts of potassium hydroxide powder in 600.0 parts by volume of dimethyl formamide is raised to 60° in 30 minutes with stirring and in the absence of air. It is maintained at this temperature for a further 30 minutes, after which it is cooled to about 10°. At a temperature between 10° and 20° 20 parts of water and then 500.0 parts by volume of 10% hydrochloric acid are added. The precipitated product is filtered off with suction, washed with water until neutral and dried. The 4-(5"-methoxybenzoxazolyl-2")-4'-phenylstilbene of formula (10) is obtained in very good yield. It can be purified as described above.

Provenance & Evidence