通过使用便宜且可用的Oxone / H 2 SO 4氧化系统对1-苯基-5-碘咪唑进行氧化环化,已经开发了一种新型的制备咪唑取代的环状碘鎓盐的方法。新的多环杂芳烃的结构已通过单晶X射线衍射法确认,揭示了环状碘鎓盐的特征结构特征。发现新产生的侧接咪唑的环状碘鎓化合物易于与元素硫进行杂环化反应,从而以良好的收率提供了苯并[5,1- b ]咪唑并噻唑。
通过使用便宜且可用的Oxone / H 2 SO 4氧化系统对1-苯基-5-碘咪唑进行氧化环化,已经开发了一种新型的制备咪唑取代的环状碘鎓盐的方法。新的多环杂芳烃的结构已通过单晶X射线衍射法确认,揭示了环状碘鎓盐的特征结构特征。发现新产生的侧接咪唑的环状碘鎓化合物易于与元素硫进行杂环化反应,从而以良好的收率提供了苯并[5,1- b ]咪唑并噻唑。
The synthesis of N‐arylimidazoles substituted at the sterically encumbered 5‐position is a challenge for modern synthetic approaches. A new family of imidazolyl aryliodonium salts is reported, which serve as a stepping stone on the way to selective formation of N1‐aryl‐5‐iodoimidazoles. Iodine acts as a “universal” placeholder poised for replacement by aryl substituents. These new λ3‐iodanes are produced
The present invention relates to the use of novel pyrrolopyrazine derivatives of Formula I,
wherein the variables n, p, q, Q, X, X′ and Y are defined as described herein, which inhibit JAK and SYK and are useful for the treatment of auto-immune and inflammatory diseases.
The present invention relates to the use of novel pyrrolopyrazine derivatives of Formula I,
wherein the variables n, p, q, Q, X, X′ and Y are defined as described herein, which inhibit JAK and SYK and are useful for the treatment of auto-immune and inflammatory diseases.