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      Ligand effect of cyclometallated iridium(iii) complexes on N-alkylation of amines in hydrogen borrowing reactions†

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      RSC Advances
      The Royal Society of Chemistry

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          Abstract

          Dinuclear iridium complexes with the general formula (C^N) 2Ir(μ-Cl) 2Ir(C^N) 2 (C^N = bidentate ligand with carbon and nitrogen donor atoms) were prepared and used in catalytic systems for N-alkylation of amines through the hydrogen borrowing pathway. Triphenylphosphine derivatives were used as auxiliary in catalytic systems to provide excellent conversion of amines to N-alkylation products in yields ranging from 57% to 100%. The catalytic ability of the catalyst depends on the structure of its coordination ligands, including bidentate ligands (C^N) and triphenylphosphine derivatives. These catalytic systems adopt an environmentally friendly and sustainable reaction process through a hydrogen self-transfer strategy, using readily available alcohols as alkylating agents without the need for bases, solvents, and other additives, showing potential in the synthetic and pharmaceutical industries.

          Abstract

          Dinuclear iridium complexes with the general formula (C^N) 2Ir(μ-Cl) 2Ir(C^N) 2 (C^N = bidentate ligand with carbon and nitrogen donor atoms) were prepared and used in catalytic systems for N-alkylation of amines through the hydrogen borrowing pathway.

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          Most cited references44

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          A short history of SHELX

          An account is given of the development of the SHELX system of computer programs from SHELX -76 to the present day. In addition to identifying useful innovations that have come into general use through their implementation in SHELX , a critical analysis is presented of the less-successful features, missed opportunities and desirable improvements for future releases of the software. An attempt is made to understand how a program originally designed for photographic intensity data, punched cards and computers over 10000 times slower than an average modern personal computer has managed to survive for so long. SHELXL is the most widely used program for small-molecule refinement and SHELXS and SHELXD are often employed for structure solution despite the availability of objectively superior programs. SHELXL also finds a niche for the refinement of macromolecules against high-resolution or twinned data; SHELXPRO acts as an interface for macromolecular applications. SHELXC , SHELXD and SHELXE are proving useful for the experimental phasing of macromolecules, especially because they are fast and robust and so are often employed in pipelines for high-throughput phasing. This paper could serve as a general literature citation when one or more of the open-source SHELX programs (and the Bruker AXS version SHELXTL ) are employed in the course of a crystal-structure determination.
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            Efficient and Durable Au Alloyed Pd Single-Atom Catalyst for the Ullmann Reaction of Aryl Chlorides in Water

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              Multialkylation of Aqueous Ammonia with Alcohols Catalyzed by Water-Soluble Cp*Ir−Ammine Complexes

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                Author and article information

                Journal
                RSC Adv
                RSC Adv
                RA
                RSCACL
                RSC Advances
                The Royal Society of Chemistry
                2046-2069
                31 October 2023
                26 October 2023
                31 October 2023
                : 13
                : 45
                : 31948-31961
                Affiliations
                [a ] Department of Applied Chemistry, National Ping Tung University Pingtong City Taiwan trchen@ 123456mail.nptu.edu.tw
                [b ] Department of Chemistry, Chung Yuan Christian University Chung-Li Taiwan R.O.C
                Author information
                https://orcid.org/0000-0003-2596-5856
                https://orcid.org/0000-0003-2785-6741
                Article
                d3ra07184g
                10.1039/d3ra07184g
                10617371
                0f81b170-1d7f-4e8c-a408-db48278c1bdc
                This journal is © The Royal Society of Chemistry
                History
                : 21 October 2023
                : 24 October 2023
                Page count
                Pages: 14
                Categories
                Chemistry
                Custom metadata
                Paginated Article

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