R. Bossio et al., STUDIES ON ISOCYANIDES AND RELATED-COMPOUNDS - AN UNUSUAL SYNTHESIS OF IMIDAZOLYLOXAZOLONES, Journal of heterocyclic chemistry, 31(4), 1994, pp. 729-732
The reaction between ethyl (Z)-3-dimethylamino-2-isocyanoacrylate (1)
and arenesulfenyl chlorides 6a-c afforded the unexpected imidazolyloxa
zolones 7a-c. The structure of compounds 7a-c was in agreement with th
eir H-1 nmr, ir and ms data and was confirmed by X-ray analysis of 7a.