Table 1 Comparison of the activity of Pd/Py-COF and Pd/Be-COF in the hydrogenation reactionsa.

From: The promotion effect of π-π interactions in Pd NPs catalysed selective hydrogenation

Entry

Substrate

Product

t (h)

Conv. (%)

Sel. (%)

TOF (h-1)b

Ratio of TOFc

1

3

>99

>99

275 (50)

5.5

2

10

>99

>99

92 (15)

6.1

3

1

>99

>99

641 (195)

3.3

4

3

>99

>99

277 (50)

5.6

5

2.5

>99

>99

389 (134)

2.9

6

0.75

>99

>99

15751 (5529)

2.9

7

1

98

99

24015 (6015)

4.0

8

1

52

>99

439 (38)

11.6

  1. aReaction conditions: 40 °C, 10 bar of H2, 2 mL of EtOH, entries 1–5, 8: 0.3 mmol of substrates, Pd catalysts 0.833 mol%; entry 6: 8 mmol of substrates, Pd catalysts 0.05 mol%; entry 7: 8 mmol of substrates, Pd catalysts 0.02 mol%. Data in parentheses refer to Pd/Be-COF.
  2. bTOF was calculated with a conversion <30%.
  3. cThe ratio of TOF of Pd/Py-COF and of Pd/Be-COF.