Journal
SYNTHETIC COMMUNICATIONS
Volume 36, Issue 17, Pages 2549-2557Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00397910600781471
Keywords
alkene; diamamonium hydrogen phosphate; Knoevenagel condensation; water
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Knoevenagel condensation of various aromatic and heteroaromatic aldehydes with active methylene compounds like methyl and ethyl cyanoacetate, malononitrile, and cyanoacetamide proceeds smoothly with stirring in water in the presence of 4 mol% of diammonium hydrogen phosphate. The reactions were carried out at room temperature in short periods with very simple workup procedure and good to high yields.
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