作者:Ratnesh Sharma、Kapil Kumar、Mangilal Chouhan、Vikas Grover、Vipin A. Nair
DOI:10.1039/c3ra42569j
日期:——
LiOH·H2O in ethanol was found to be an effective reagent for the synthesis of 3,4-disubstituted pyrrole derivatives by the van Leusen method. In situ formation of chalcones from aromatic aldehydes and enolisable ketones, and their subsequent reaction with tosylmethyl isocyanide resulted in the formation and precipitation of pyrrole derivatives from the reaction medium, in good yields. The solvation effect of the polar medium facilitates the reaction.
在乙醇中,LiOH·H2O被发现是通过van Leusen方法合成3,4-二取代吡咯衍生物的有效试剂。从芳香醛和可烯醇化的酮原位形成的查尔酮,与对甲苯磺酰甲基异氰化物的后续反应导致了吡咯衍生物在反应介质中形成并沉淀,产率良好。极性溶剂的溶剂化效应促进了反应的进行。