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Knoevenagel reaction of 4‐nitrobenzaldehyde 18 with diethyl malonate 19 to product 20 over 2 and 4 h catalysis reaction time in the presence of sonicated PMA6116 or control PMA42 . Mean values±SD from the mean. N=3 independent sonication and subsequent catalysis runs of the same polymer sample. All data are reported in Table S8.
