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Table 4 Comparison of three-component reaction of benzyl bromide, sodium azide and phenyl acetylene under different condition using different catalysts

From: Magnetic γFe2O3@Sh@Cu2O: an efficient solid-phase catalyst for reducing agent and base-free click synthesis of 1,4-disubstituted-1,2,3-triazoles

Entry

Catalyst and catalyst loading

Solvent

Condition

Time (min)

Yield (%)

TON

TOF

Refs.

1

NiFe2O4-glutamate-Cu (1 mol%)

H2O

r.t

240

92

9.2 * 103

2.3 * 103

[5]

2

CuNPs@agarose (0.05 mol%)

H2O

40 °C

480

96

1.9 * 105

2.4 * 104

[7]

3

OSPs-CuBra (1 mol%)

H2O

70 °C

240

91

9.1 * 103

2.2 * 103

[8]

4

Cu/cb (5 mol%)

H2O

100 °C

40

92

1.8 * 103

2.8 * 103

[9]

5

Cu catc (0.25 mol%)

Sodium ascorbate (10 mol%)

t-BuOH: H2O (1:3)

50 °C

90

99

3.9 * 104

2.6 * 104

[17]

6

MNPs@FGlyd (0.5 mol%)

Sodium ascorbate

t-BuOH: H2O

60 °C

240

99

1.9 * 104

4.9 * 103

[19]

7

Cu/SDe (6 mol%)

H2O

Sonication

15

95

1.6 * 103

6.3 * 103

[51]

8

γFe2O3@Sh@Cu2O (0.025 mol%)

H2O:EtOH (1:1)

60 °C

20

93

3.7 * 105

1.0 * 106

This work

  1. aOyster shell powders
  2. bCu(I) on charcoal
  3. cSelf-assembled polymeric imidazole-copper catalyst
  4. dFe3O4-silicacoated@functionalized 3-glycidoxypropyltrimethoxysilane
  5. eCopper/sandarac