E. Pravardhan Reddy, A. Sumankumar, B. Sridhar, Y. Hemasri, Y. Jayaprakash Rao and B. V. Subba Reddy
Org. Biomol. Chem., 2017,15, 7580-7583
DOI:
10.1039/C7OB00705A,
Paper
A novel strategy has been developed for the synthesis of chromeno[3,4-b]pyrrol-4(3H)-one and substituted pyrrole derivatives through 1,5-electrocyclization of conjugated azomethine ylides. This is the first example of the preparation of highly substituted pyrrole derivatives from chromene-3-carboxaldehydes (non-enolizable aldehydes) and N-alkyl amino acids/esters. This method is simple and applicable to a diverse range of substrates.
