SEARCH Articles Figures Tables 8-Lactones, a-carboxysynthesis Knoevenagel reaction, Meldrum’s acid Esters, p-enamino Knoevenagel reaction, Meldrum’s acid Knoevenagel reaction Knoevenagel reaction acidity Lactones, a-methylenesynthesis Knoevenagel reaction, Meldrum’s acid MELDRUM-S Acid Meldrum acids Meldrums acid