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      Secondary diphosphine and diphosphido ligands: synthesis, characterisation and group 1 coordination compounds

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          BYPASS: an effective method for the refinement of crystal structures containing disordered solvent regions

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            Direct synthesis of amides from alcohols and amines with liberation of H2.

            Given the widespread importance of amides in biochemical and chemical systems, an efficient synthesis that avoids wasteful use of stoichiometric coupling reagents or corrosive acidic and basic media is highly desirable. We report a reaction in which primary amines are directly acylated by equimolar amounts of alcohols to produce amides and molecular hydrogen (the only products) in high yields and high turnover numbers. This reaction is catalyzed by a ruthenium complex based on a dearomatized PNN-type ligand [where PNN is 2-(di-tert-butylphosphinomethyl)-6-(diethylaminomethyl)pyridine], and no base or acid promoters are required. Use of primary diamines in the reaction leads to bis-amides, whereas with a mixed primary-secondary amine substrate, chemoselective acylation of the primary amine group takes place. The proposed mechanism involves dehydrogenation of hemiaminal intermediates formed by the reaction of an aldehyde intermediate with the amine.
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              Platinum Group Organometallics Based on “Pincer” Complexes: Sensors, Switches, and Catalysts

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                Author and article information

                Journal
                ICHBD9
                Dalton Trans.
                Dalton Trans.
                Royal Society of Chemistry (RSC)
                1477-9226
                1477-9234
                2014
                2014
                : 43
                : 1
                : 267-276
                Article
                10.1039/C3DT51844B
                53447fa2-768f-499c-b6ae-d7a56a771638
                © 2014
                History

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