Table 2 Oxidation reactions catalyzed by 1a.

From: Ultra-small and highly dispersive iron oxide hydroxide as an efficient catalyst for oxidation reactions: a Swiss-army-knife catalyst

Entry

Oxidation reaction

Conversion (%)b

Selectivity (%)c

TON (TOF(h−1))

1

100

92

2967 (741)

2

91

94

2700 (675)

3

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99

95

2938 (734)

4

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100

93

2967 (741)

5

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100

95

2967 (741)

6

75

97

2226 (556)

7

89

96

2641 (660)

8

71

99

2107 (527)

9

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85

98

2522 (631)

10

65

99

1929 (482)

11

80

100

2374 (593)

12

58

100

1721 (430)

13

60

78

1780 (445)

14

53

100

1573 (393)

  1. aReaction conditions; four hours; catalyst (67.4 μM), H2O (1 mL), substrate (0.2 mmol), H2O2 (0.4 mmol), at room temperature.
  2. bThe GC conversion (%) is measured relative to the starting substrate.
  3. cSelectivity to sulfoxide = (sulfoxide %/(sulfoxide% + sulfone%)) × 100; Selectivity to benzaldehyde = (aldehyde%/(aldehyde% + carboxylic acid%)) × 100; Selectivity to epoxide = (epoxide%/(epoxide% + aldehyde%)) × 100; TON = mol product/mol catalyst; TOF = TON/time of reaction (4 h).