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      Recent Advances in Cyanamide Chemistry: Synthesis and Applications

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          Abstract

          The application of alkyl and aryl substituted cyanamides in synthetic chemistry has diversified multi-fold in recent years. In this review, we discuss recent advances (since 2012) in the chemistry of cyanamides and detail their application in cycloaddition chemistry, aminocyanation reactions, as well as electrophilic cyanide-transfer agents and their unique radical and coordination chemistry.

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          Most cited references83

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          Co(III)-catalyzed C-H activation/formal SN-type reactions: selective and efficient cyanation, halogenation, and allylation.

          The first cobalt-catalyzed cyanation, halogenation, and allylation via C-H activation have been realized. These formal SN-type reactions generate valuable (hetero)aryl/alkenyl nitriles, iodides, and bromides as well as allylated indoles using a bench-stable Co(III) catalyst. High regio- and mono-selectivity were achieved for these reactions. Additionally, allylation proceeded efficiently with a turnover number of 2200 at room temperature, which is unprecedented for this Co(III) catalyst. Alkenyl substrates and amides have been successfully utilized in Cp*Co(III)-catalyzed C-H activation for the first time.
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            Cobalt-Catalyzed CH Cyanation of Arenes and Heteroarenes

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              Rhodium-Catalyzed Directed C–H Cyanation of Arenes with N-Cyano-N-phenyl-p-toluenesulfonamide

              A Rh-catalyzed directed C-H cyanation reaction was developed for the first time as a practical method for the synthesis of aromatic nitriles. N-Cyano-N-phenyl-p-toluenesulfonamide, a user-friendly cyanation reagent, was used in the transformation. Many different directing groups can be used in this C-H cyanation process, and the reaction tolerates a variety of synthetically important functional groups.
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                Author and article information

                Contributors
                Role: Academic Editor
                Journal
                Molecules
                Molecules
                molecules
                Molecules : A Journal of Synthetic Chemistry and Natural Product Chemistry
                MDPI
                1420-3049
                12 April 2017
                April 2017
                : 22
                : 4
                : 615
                Affiliations
                School of Chemistry, Joseph Banks Laboratories, University of Lincoln, Lincoln LN6 7DL, UK; ranga_prabhath@ 123456yahoo.com (M.R.R.P.); luwilliams@ 123456lincoln.ac.uk (L.W.); shreeshabhat@ 123456yahoo.co.in (S.V.B.)
                Author notes
                [* ]Correspondence: psharma@ 123456lincoln.ac.uk ; Tel.: +44-015-2288-6885
                Article
                molecules-22-00615
                10.3390/molecules22040615
                6154562
                28417938
                a188b6f3-b214-40ea-ae4c-1be4ea8dc871
                © 2017 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                : 09 March 2017
                : 07 April 2017
                Categories
                Review

                cyanamide,synthesis,aminocyanation,cycloaddition,electrophilic cyanation,radical reaction,coordination chemistry

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