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Journal of Chemical Sciences, 2013, Volume 125, Issue 4, pp 851-857.
Suresh Patil, Swati D Jadhav, M B Deshmukh.
Organic Research Laboratory, Padmabhushan Dr. Vasantraodada Patil College, Sangli, 416 312, India and
Department of Chemistry, Shivaji University, Kolhapur, 416 004, India.
Abstract
A convenient, eco-friendly and economic method for Knoevenagel condensation of aromatic aldehydes with active methylene compounds using calcined eggshell (CES) as an efficient natural catalyst in aqueous medium has been reported. CES is a new, ecologically safe and inexpensive green catalyst obtained from renewable resources.
