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      Highly selective olefin-assisted palladium-catalyzed oxidative carbocyclization via remote olefin insertion†

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      Chemical Science
      Royal Society of Chemistry

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          Abstract

          An olefin-assisted palladium-catalyzed oxidative carbocyclization of enallenes to afford cyclohexene skeletons involving ligand exchange of olefins has been established.

          Abstract

          A highly selective olefin-assisted palladium-catalyzed oxidative carbocyclization via remote olefin insertion to afford cyclohexenes has been developed. It was shown that the assisting olefin moiety was indispensable for the formation of the cyclohexene product. Furthermore, preliminary studies on chiral anion-induced asymmetrical carbocyclization–borylation of enallenes have been carried out.

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          Most cited references16

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          Defect-Engineered Metal–Organic Frameworks

          Defect engineering in metal–organic frameworks (MOFs) is an exciting concept for tailoring material properties, which opens up novel opportunities not only in sorption and catalysis, but also in controlling more challenging physical characteristics such as band gap as well as magnetic and electrical/conductive properties. It is challenging to structurally characterize the inherent or intentionally created defects of various types, and there have so far been few efforts to comprehensively discuss these issues. Based on selected reports spanning the last decades, this Review closes that gap by providing both a concise overview of defects in MOFs, or more broadly coordination network compounds (CNCs), including their classification and characterization, together with the (potential) applications of defective CNCs/MOFs. Moreover, we will highlight important aspects of “defect-engineering” concepts applied for CNCs, also in comparison with relevant solid materials such as zeolites or COFs. Finally, we discuss the future potential of defect-engineered CNCs.
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            A Series of Isoreticular, Highly Stable, Porous Zirconium Oxide Based Metal-Organic Frameworks

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              Self-Supporting Metal-Organic Layers as Single-Site Solid Catalysts

              Metal-organic layers (MOLs) represent an emerging class of tunable and functionalizable two-dimensional materials. In this work, the scalable solvothermal synthesis of self-supporting MOLs composed of [Hf6O4(OH)4(HCO2)6] secondary building units (SBUs) and benzene-1,3,5-tribenzoate (BTB) bridging ligands is reported. The MOL structures were directly imaged by TEM and AFM, and doped with 4'-(4-benzoate)-(2,2',2''-terpyridine)-5,5''-dicarboxylate (TPY) before being coordinated with iron centers to afford highly active and reusable single-site solid catalysts for the hydrosilylation of terminal olefins. MOL-based heterogeneous catalysts are free from the diffusional constraints placed on all known porous solid catalysts, including metal-organic frameworks. This work uncovers an entirely new strategy for designing single-site solid catalysts and opens the door to a new class of two-dimensional coordination materials with molecular functionalities.
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                Author and article information

                Journal
                Chem Sci
                Chem Sci
                Chemical Science
                Royal Society of Chemistry
                2041-6520
                2041-6539
                01 January 2017
                15 September 2016
                : 8
                : 1
                : 616-620
                Affiliations
                [a ] Department of Organic Chemistry , Arrhenius Laboratory , Stockholm University , SE-106 91 , Stockholm , Sweden . Email: jeb@ 123456organ.su.se
                Article
                c6sc02660e
                10.1039/c6sc02660e
                5458679
                173be6f8-7ca5-481a-9b29-8126b08fc473
                This journal is © The Royal Society of Chemistry 2016

                This is an Open Access article distributed under the terms of the Creative Commons Attribution 3.0 Unported License ( http://creativecommons.org/licenses/by/3.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 17 June 2016
                : 1 September 2016
                Categories
                Chemistry

                Notes

                †Electronic supplementary information (ESI) available. See DOI: 10.1039/c6sc02660e


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