Abstract
2‐Alkylthio‐3‐alkyl‐5‐phenylmethylidene‐4H‐imidazol‐4‐ones 6 were synthesized by N‐alkylation and S‐alkylation of 2‐thioxo‐5‐phenylmethylidene‐4‐imidazolidinone 5, which was obtained via cyclization of vinyl isothiocyanate 4 with excess ammonium hydroxide (28% NH3 in water).
Acknowledgments
We gratefully acknowledge financial support of this work by the Natural Science Foundation of Hubei Education Commission of China (Project No. D200560003) and the Natural Science Foundation of China (Project No. 20102001).