نتایج جستجو برای: n hehxagrammus

تعداد نتایج: 976475  

Abdolhamid Bamoniri, Bi Bi Fatemeh Mirjalili, Seyedeh Azita Fazeli Attar

A highly efficient procedure for the preparation of N,N'-alkylidenebisamides in the presence of BF3.SiO2 as a catalyst is described. N,N'-alkylidenebisamides have been prepared via one-pot three-component condensation reaction of various aldehydes and amides. All of the reactions proceeded in high yields and in moderately short reaction times.

Journal: :Journal of Biological Chemistry 1961

Journal: :Acta Crystallographica Section C Crystal Structure Communications 1999

Journal: :Acta Crystallographica Section E Structure Reports Online 2011

In this article, the notion of $n-$derivation is introduced for all integers $ngeq 2$. Although all derivations are $n-$derivations,  in general these notions are not equivalent. Some properties of ordinary derivations are  investigated for $n-$derivations. Also, we show that under certain mild condition  $n-$derivations are derivations.

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