Department of Chemistry;
Prabhat Kumar College;
Contai;
India;
Department of Chemistry;
Indian Institute of Technology;
Kharagpur;
India;
6H-Furo3; 4-bfuranone; Naphtho2; 3-bfuran; Intramolecular; Pummerer; Reaction; Desulfanylation; Lactonization;