Abstract
Nanoporous silica anchored with sulfonic acid groups effectively catalyzes the iodination of aromatic compounds. The reaction was performed in water using hydrogen peroxide as oxidant. The recyclability of catalyst in green media significantly contributes to the environmental friendliness of the procedure.
GRAPHICAL ABSTRACT
ACKNOWLEDGMENT
We are grateful to the research councils of Mazandaran University for their financial support.
Notes
Note. Reaction conditions: 1,3,5-trimethoxybezene (1 mmol), iodine (0.5 mmol), and hydrogen peroxide (0.6 mmol) at (45 °C).
a Substrate (1 mmol), I2 (0.5 mmol), H2O2 (0.6 mmol), and MCM-41-SO3H (5 mol%, 0.045 g).
b Isolated yield.
c 3 mol% of catalyst was used.
d Yield in parentheses corresponds to diiodo product.
e Molar ratio of reagents: substrate (1 mmol), I2 (1 mmol), H2O2 (1.2 mmol), and MCM-41-SO3H (7 mol%, 0.06 g).
f Temperature of the process: 55 °C.