Three-component access to pyrroles promoted by the CAN–silver nitrate system under high-speed vibration milling conditions: a generalization of the Hantzsch pyrrole synthesis
作者:Verónica Estévez、Mercedes Villacampa、J. Carlos Menéndez
DOI:10.1039/c2cc38099d
日期:——
A sequential multicomponent process involving the high-speed vibration milling of ketones with N-iodosuccinimide and p-toluenesulfonic acid, followed by addition of a mixture of primary amines, β-dicarbonyl compounds, cerium(IV) ammonium nitrate and silver nitrate afforded polysubstituted, functionalized pyrroles. This one-pot, solid-state process can be considered as the coupling of an α-iodoketone preparation with a general version of the classical Hantzsch pyrrole synthesis.
一种顺序多组分过程,涉及酮与N-碘代琥珀酰亚胺和邻甲苯磺酸的高速振动研磨,随后加入混合的伯胺、β-二羰基化合物、铈(IV)硝酸铵和硝酸银,得到多取代、功能化的吡咯。这种一步法、固态过程可视为α-碘代酮制备与经典Hantzsch吡咯合成通法的结合。