期刊
RSC ADVANCES
卷 5, 期 106, 页码 87400-87410出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra14637b
关键词
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资金
- Fundacao para a Ciencia e a Tecnologia (FCT), Portugal [UID/QUI/00100/2013]
- Foundation for Science and Technology (FCT), Portugal [SFRH/BPD/88450/2012, SFRH/BPD/76192/2011]
The two new metal-organic frameworks (MOFs) of zinc(II) and copper(II) [Zn2L2(1,4-BDC)](n)center dot 2n(DMF) (1) and [Cu(L)(2)](n)center dot 4n(DMF)center dot n(H2O) (2) (L = 4-(pyridin-4-ylcarbamoyl)benzoate; BDC = benzenedicarboxylate), respectively, have been synthesized from a pyridyl amide functionalized benzoic acid (HL). They were characterized by elemental, FT-IR, thermogravimetric, powder X-ray and single crystal X-ray diffraction analyses. Single crystal X-ray crystallography reveals that 1 and 2 exhibit 2D and 3D polymeric architectures, respectively. Topological analysis illustrates a 6-connected pcu alpha-Po primitive cubic topology for 1 and an 8-connected body centred cubic (bcu) topology for 2. Both 1 and 2 act as heterogeneous catalysts for the nitroaldol reaction in aqueous medium, with a high yield and moderate to good diastereoselectivities under ambient conditions. They can be recycled and reused without any significant loss of the catalytic efficiency.
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