Multicomponent reactions in PEG-400: ruthenium-catalyzed synthesis of substituted pyrroles
作者:Srivari Chandrasekhar、Vidyavathi Patro、Lahu N. Chavan、Rambabu Chegondi、René Grée
DOI:10.1016/j.tetlet.2014.08.105
日期:2014.10
An efficient and eco-friendly method for the synthesis of substituted pyrroles has been developed via ruthenium-catalyzed multicomponent reaction of ketone, amine, and ethylene glycol in PEG-400 as solvent medium without using any external ligand. The catalytic system and solvent can be recycled with the same, as well as different, ketones with minimum loss of Ru-catalyst activity.
通过在不使用任何外部配体的情况下,通过钌催化的PEG-400中的酮,胺和乙二醇的多组分反应,开发了一种高效,环保的取代吡咯合成方法。催化体系和溶剂可以用相同或不同的酮循环使用,而Ru催化剂的活性损失最小。