Table 3 Comparison of the catalytic activity of GO@Fe3O4@TRMS@HBPB@Cu catalyst and its related intermediates.

From: Green synthesis of quinazoline derivatives using a novel recyclable nano-catalyst of magnetic modified graphene oxide supported with copper

Entry

Catalyst

Time

Yield (%)b

1

GO

30

Trace

2

GO@Fe3O4

25

60

3

GO@Fe3O4@TRMS

25

52

4

GO@Fe3O4@TRMS@HBPB

25

68

5

GO@Fe3O4@TRMS@HBPB@Cu

22

95

  1. aReaction conditions: aryl benzaldehyde (1 mmol), 5-chloro-2-aminobenzophenone (1 mmol), and ammonium acetate (2.5 mmol, 0.231 g).
  2. bIsolated yield.
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