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Table 1 Screening the amount of catalyst for the preparation of 1,8-dioxodecahydroacridines

From: A facile and efficient synthesis of 1,8-dioxodecahydroacridines derivatives catalyzed by cobalt–alanine metal complex under aqueous ethanol media

Entry Catalyst (mol%) Time (h) Yield (%)a
1 2.5 4.5 72
2 5 1.0 96
3 10 3.0 90
4 15 3.5 80
  1. aYields of isolated products