Journal of Molecular Catalysis A-Chemical, Vol.240, No.1-2, 99-102, 2005
Niobium (V) chloride catalyzed Knoevenagel condensation: An efficient protocol for the preparation of electrophilic alkenes
The condensation reaction has been carryout very conveniently to obtain the corresponding substituted olefins in excellent yields and showing all the products in excellent E-geometry. The reaction conditions are very mild and applicable to various aldehydes as well as active methylene compounds. (c) 2005 Elsevier B.V. All rights reserved.
Keywords:aldehydes;active methylene compounds;Knoevenagel condensation;Lewis acid;electrophilic alkenes