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Synfacts 2010(5): 0617-0617
DOI: 10.1055/s-0029-1219729
DOI: 10.1055/s-0029-1219729
Polymer-Supported Synthesis
© Georg Thieme Verlag
Stuttgart ˙ New York
Palladium Cross-Linked Crystal-Catalyzed Knoevenagel Reaction-Cyclization
Y. Liu, R. Zhang, C. He*, D. Dang, C. Duan*
Dalian University of Technology, P. R. of China
Further Information
Publication History
Publication Date:
22 April 2010 (online)
Significance
Palladium cross-linked triangle crystalline catalyst 4 was prepared by complexation of Pd(NO3)2˙2H2O and ligand 3 followed by crystallization. Knoevenagel condensation-cyclization of salicylaldehyde derivatives and active methylene compounds was carried out in the presence of catalyst 4 to give the corresponding coumarin and iminochromene derivatives in up to 80% yield.