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SEC elutograms monitoring conversion of (PS:CST) [G = 4.5-CO2Me]-amide-{G = 5.0; -NH2}n into higher MW product cascade upon prolonged heating. PS:CST product isolated by ultrafiltration after allowing reaction to proceed 17 days at 40°C (A). Prolonged refluxing in methanol for (B) 2 days, (C) 4 days, (D) 6 days, (E) 8 days, and (F) 10 days.
