Novel Synthetic Approach for the Access of Functionalised 4H-Chromenes
作者:Mahdieh Sadeghpour、Fatemeh Bagheri
DOI:10.3184/174751916x14792153319761
日期:2016.12
A simple, efficient and high-yielding one-pot protocol for the synthesis of novel functionalised 4H-chromenes and chromene carboxylic acids has been developed using multi-component domino coupling reactions of anil-like compounds with 1,3-diketones and indole in the presence of formic acid catalyst undersolvent-freeconditions. The protocol avoids the use of expensive catalysts, toxic solvents and