10519-33-2Relevant articles and documents
Catalysis by metal-organic frameworks: Proline and gold functionalized MOFs for the aldol and three-component coupling reactions
Lili, Liu,Xin, Zhang,Shumin, Rang,Ying, Yang,Xiaoping, Dai,Jinsen, Gao,Chunming, Xu,Jing, He
, p. 13093 - 13107 (2014)
Translation of homogeneous catalysis into heterogeneous catalysis is a promising solution to green and sustainable development in the chemical industry. Recent research has shown that metal-organic frameworks (MOFs) could bridge the gap between homogeneous and heterogeneous catalysis. We successfully prepared for the first time a novel homochiral Zn-containing MOF referred to as CUP-1 based on the mixed linkers of 2-aminoterephthalic acid and l-lactic acid in a one-pot synthesis. The free NH2 group in the homochiral framework of CUP-1, similar to the well known achiral IRMOF-3, is potentially available for undergoing a variety of organic transformations, as demonstrated by choosing the auxiliary chiral l-proline and nano gold to functionalize MOFs with postsynthetic modification and one-pot synthesis strategies. IRMOF-3, CUP-1 and their functionalized samples were in-depth characterized by X-ray diffraction, N2 adsorption-desorption, optical and transmission electron microscopy, infrared spectroscopy, solid state nuclear magnetic resonance, thermogravimetric and differential thermal analysis, and temperature-programmed reduction. l-Proline functionalized IRMOF-3 shows fair to excellent enantioselectivity (up to 98%) in asymmetrical aldol reactions of aldehydes and acetone with higher turnover numbers and catalytic stabilities than the homogeneous counterpart. The gold functionalized CUP-1 catalysts are found to be highly active, stable and reusable for the three-component coupling reactions of aldehydes, alkynes and amines. This work provides general methods to functionalize MOFs with the active ligand and metal nanoparticles for fabrication of highly efficient MOF-based heterogeneous catalysts. This journal is the Partner Organisations 2014.
Control of aldol reaction pathways of enolizable aldehydes in an aqueous environment with a hyperbranched polymeric catalyst
Chi, Yonggui,Scroggins, Steven T.,Boz, Emine,Fre Chet, Jean M. J.
supporting information; experimental part, p. 17287 - 17289 (2009/07/11)
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Synthesis of Various New Nitroxide Free Radical Fatty Acids
Hideg, Kalman,Lex, Laszlo
, p. 1431 - 1438 (2007/10/02)
A generally applicable method is presented for the synthesis of various new nitroxide fatty acid isomers in which the fatty acid chains are attached at different positions of the pyrrolidin-1-oxyl ring.These isomers can be obtained by Michael addition of a nitroalkane to an α,β-unsaturated ketone to give a γ-nitro ketone, followed by ring closure with zinc and ammonium chloride to give a 1-pyrroline N-oxide which then reacts with Grignard reagents to give a pyrrolidin-1-oxyl free radical compound, which undergoes phase transfer oxidation of its terminal unsaturated bond.
