Construction of a MOF‐Supported Palladium Catalyst via Metal Metathesis.

A new MOF‐supported heterogeneous palladium catalyst Pd/NBB‐1 has been synthesized successfully through the effective metal metathesis between Pd(CF3COO)2 and NBB‐1. NBB‐1 is a two‐dimensional zinc metal‐organic framework constructed from 2‐aminoterephthalate (NH2−H2BDC) and 2,2′‐bipyridine‐5‐carboxylate (HBPC) by solvothermal method. The replacement efficiency of Pd(II) to Zn(II) is up to 72% after only 24 hours, which is beneficial to the catalytic application. Pd/NBB‐1 with a low loading of 2 mol% works efficiently in the 1,4‐addition reaction of arylboronic acids with α,β‐unsaturated ketones in air, and its catalytic activity keeps unchanged after 3 reaction cycles. This work provides a new strategy to effectively prepare supported noble metal/MOF catalysts, which would further increase the practical applications of metal‐organic frameworks. [ABSTRACT FROM AUTHOR]