Document Type : Research Paper
Department of Chemistry, College of Science, Yazd University, Yazd, P. O. Box: 89195-741,I. R. Iran
Department of chemistry, Faculty of science, Payame noor University, Tehran, Iran
Nano-sawdust/Sn(IV) was used as a readily available, inexpensive, biodegradable and environmentally benign heterogeneous solid acid biocatalyst for the one pot cascade synthesis of highly functionalized dihydro-2-oxypyrroles. Four-component reactions (4CRs) of the dialkylacetylenedicarboxylates, amines and aldehydes were used for the synthesis of highly functionalized dihydro-2-oxypyrroles under thermal conditions.