• ceo2-catalyzed one-pot selective synthesis of n-alkyl amides from nitriles, amines and water

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    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 1011
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    • شماره تماس دبیرخانه رویداد: -
     among 13 kinds of metal oxides, ceria (ceo2) shows the highest catalytic activity for one-pot selective synthesis of the secondary amide from 2-cyanopyridine and n-octylamine as a test reaction. ceo2 acts as a reusable heterogeneous catalyst, and it is effective for the secondary amide formation from various nitriles and amines in high yields (73% to >99%). pharmacologically important products such as heteroaromatic n-alky amides and morpholine amide are effectively synthesized, indicating that ceo2 can be a practically useful catalyst. a proposed mechanism includes (1) hydration of nitrile to the primary amide and (2) transamidation of the primary amide with amine as the rate-limiting step. this reaction mechanism provides a reason why the present catalytic system gives high selectivity.

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