An Iodine-Functionalized Metal-Organic framework for catalytic alkene bromination

An iodine-functionalized metal-organic framework (MOF), UiO-68-I, was synthesized. UiO-68-I showed good catalytic activity for dibromination of alkenes and alkynes with a low catalyst loading of 1% and was able to be recycled and recovered efficiently. Mechanistic studies suggest that UiO-68-I may trigger the formation of molecular bromine through a radical intermediate and thus accelerate the reaction. The activity and stability of UiO-68-I outperforms most earlier reports on organoiodine catalysts, showing the great potential of iodine-functionalized MOFs as recyclable heterogeneous hypervalent iodine reagents or catalysts.

Automated summary

An iodine-functionalized metal-organic framework (MOF), UiO-68-I, was synthesized and showed good catalytic activity for dibromination of alkenes and alkynes. Its low catalyst loading of 1% allows for efficient recycling and recovery. Mechanistic studies suggest that UiO-68-I may accelerate the reaction by triggering the formation of molecular bromine through a radical intermediate. The activity and stability of UiO-68-I surpasses previous reports on organoiodine catalysts, highlighting the potential of iodine-functionalized MOFs as recyclable heterogeneous hypervalent iodine reagents or catalysts.