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Table 1 Polystyrene sulfonate-catalyzed simple synthesis of N-substituted pyrroles following Figure 1

From: Polystyrenesulfonate-catalyzed synthesis of novel pyrroles through Paal-Knorr reaction

Entry Amine Product Time (h) Yield (%)a
1 10 96
2 15 81
3 11 83
4 19 98
5 18 94
6 20 88
7 22 85
  1. aisolated yield