Hydrochloric Acid → HCID 68141253, compound

Participants

Reaction Steps

3.0 g of 2-(methylamino-acetamido)-5-chloro-benzophenone were dissolved in 30 mls. of anhydrous alcohol and then mixed with 2.0 g of freshly distilled acrylonitrile. The mixture was stirred for 2 hours at room temperature and then heated under reflux for a further 8 hours. After being allowed to stand overnight at room temperature a further 2.0 g of freshly distilled acrylonitrile was added and the mixture heated under reflux with stirring for a further 4 hours. At this point a sample showed in a thin-layer chromatogram a uniform point which differed from that of the initial product. The turbid solution was filtered and concentrated in vacuo (approx. 0.1 mm Hg), 3.0 g of a colourless oil being obtained. This residue was dissolved in anhydrous diethyl ether. After passing dry hydrogen chloride into this solution, 3.6 g of 2-(5-cyano-3-methyl-3-aza-pentanamido)-5-chloro-benzophenone hydrochloride were obtained, corresponding to 92% of theory. The product had a melting point of 166°-168°. The RF value in a thin-layer chromatogram in methanol as flow medium was 0.85.

Provenance & Evidence