Sharif University of Technology Scientia Iranica 1026-3098 21 6 2014 12 01 Citric acid as an ecient and trifunctional organo catalyst for one-pot synthesis of new indolenines by Fischer's method at reflux condition in ethanol Citric acid as an ecient and trifunctional organo catalyst for one-pot synthesis of new indolenines by Fischer's method at reflux condition in ethanol 2059 2065 3598 EN M.A. Zolfigol Faculty of Chemistry, Bu-Ali Sina University, Hamedan, P.O. Box 6517838683, Iran S. Sajjadifar Department of Chemistry, Payame Noor University, Tehran, P.O. Box 19395-4697, Iran. Gh. Chehardoli Department of Medicinal Chemistry, School of Pharmacy, Hamadan University of Medical Sciences, Zip Code 65178, Hamadan, Iran N. Javaherneshan Faculty of Chemistry, Bu-Ali Sina University, Hamedan, P.O. Box 6517838683, Iran Journal Article 2014 12 29 New indolenines I(1-18) were prepared by Fischer indole synthetic reaction of hydrazines derivatives H(1-6) with isoproylmethylketone K1, 2-methylcyclohexanone K2 and diisopropyl ketone K3 in presence of citric acid as a new catalyst at reflux condition in high yield. https://scientiairanica.sharif.edu/article_3598_6a450490f238b4ddff085d66a916a206.pdf