Highly selective aerobic oxidation of alcohols to aldehydes over a new Cu(II)-based metal-organic framework with mixed linkers

Abstract

A new Cu(II)-based metal-organic framework {[Cu2(1,2-BDC)2(Fbtx)2]·3H2O}n (denoted as Cu-FMOF, CCDC-1519440, 1,2-BDC=1,2-benzenedicarboxylate, Fbtx=1,4-bis(1,2,4-triazole-1-ylmethyl)-2,3,5,6-tetrafluorobenenze) was hydrothermally synthesized and structurally characterized. The Cu-FMOF exhibits a 3D 4-connected coordination framework with the extremely rare (65·8)-hxg-d-4-P2/c topology. Using air as the oxidant, the crystalline Cu-FMOF could be used as a highly efficient heterogeneous catalyst for the TEMPO-assisted oxidation of alcohols to aldehydes. Furthermore, the Cu-FMOF catalyst could be easily recovered and reused for several times without a significant loss of catalytic activity or structural deterioration.