New topological Co2(BDC)2(DABCO) as a highly active heterogeneous catalyst for the amination of oxazoles via oxidative C-H/N-H couplingsElectronic supplementary information (ESI) available. CCDC 1063411. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c5cy01145k

• Main Authors: Tu, Thach N, Nguyen, Khoa D, Nguyen, Truong N, Truong, Thanh, Phan, Nam T. S
• Format: Article
• ISSN: 2044-4753; 2044-4761
• DOI: 10.1039/c5cy01145k

Herein, we report the synthesis, structural characterization, and catalytic properties of a new cobalt-based metal-organic framework, Co 2 (BDC) 2 (DABCO) (where BDC = 1,4-benzenedicarboxylate and DABCO = 1,4-diazabicyclo[2.2.2]octane), namely VNU-10 (where VNU = Vietnam National University). Single-crystal X-ray diffraction analysis revealed that VNU-10 crystallizes in the hexagonal space group P 6/ mmm . The structure of this material is comprised of two-dimensional kgm layers which are interconnected by DABCO pillars to afford an overall three-dimensional porous architecture. VNU-10 exhibited exceptional catalytic activity toward the direct amination of oxazoles via C-H/N-H couplings while a previously reported topological isomer, Co 2 (BDC) 2 (DABCO), with the sql topology, displayed poor activity. Leaching tests indicated that homogeneous catalysis via leached active cobalt species is unlikely. Furthermore, the VNU-10 catalyst was facilely isolated from the reaction mixture and reused several times without degradation of the catalytic reactivity. The synthesis, structural characterization, and catalytic properties of a new topological cobalt-based metal-organic framework, Co 2 (BDC) 2 (DABCO) were reported.