Table 3 Screening of solvent.

From: Pd immobilization biguanidine modified Zr-UiO-66 MOF as a reusable heterogeneous catalyst in Suzuki–Miyaura coupling

Entry

Solvent

Time (Min)

Yield (%)

1

DMF

60

65

2

Toluene

60

55

3

EtOH

60

70

4

H2O

120

50

5

EtOH/H2O (1:1)

20

96

  1. Reaction conditions: 4-methylbromobenzene (1.0 mmol), phenylboronic acid (1.0 mmol), UiO-66-biguanidine/Pd, K2CO3 as base (2 mmol) and solvent (3 mL) at 50 °C; Isolated yield.
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