The action of arylamines on some substituted 2-Thiazolin-5-ones
AM Khalil, El-Gawad II Abd and M Hammouda
Australian Journal of Chemistry
27(9) 2035 - 2039
The heterocyclic ring in 2-aryl-4-arylmethylene- and 4-arylmethylene-2-benzylthio-2-thiazolin-5-ones is readily opened by the action of primary aromatic amines in acetic acid containing a catalyticamount of sodium acetate with the formation of 1,2-diaryl-4-arylmethylene-2-imidazolin-5-ones and of 3-aryl-5-arylmethylene-2-thiohydantoins respectively. 4-Benzylidene-1-(p-chloropheny1)-2-phenyl-2-imidazolin-5-one was also obtained by the cyclization of the anilide of α-(p-chlorothiobenzamido)-β-phenylacrylic acid under the same reaction conditions. A possible reaction mechanism is postulated.
Full text doi:10.1071/CH9742035
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