2006•Phosphorus, sulfur, and silicon and the related elementsRequires access
The Synthesis of 2-Alkylthio-3-alkyl-5-arylmethylidene4H-imidazol-4-ones
Yong Qiang Sun, Liping Gao, Zhiqiang Guo, Ming‐Wu Ding
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Abstract
2-alkylthio-3-alkyl-5-arylmethylidene-4H-imidazol-4-ones were synthesized by the S-alkylation and N-alkylation of 2-thioxo-5-arylmethylidene-4-imidazolidinones, which were obtained via a tandem aza-Wittig reaction of vinyliminophosphoranes, carbon disulfide, and excess ammonium hydroxide (28% NH3 in water).