Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 7521-41-7, Name is 2-Aminonicotinaldehyde, molecular formula is , belongs to pyridine-derivatives compound. In a document, author is Jiang, Gan, COA of Formula: C6H6N2O.
Recyclable Heterogeneous Copper(II)-Catalyzed Oxidative Cyclization of 2-Pyridine Ketone Hydrazones Towards [1,2,3]Triazolo[1,5-a]pyridines
The heterogeneous copper(II)-catalyzed oxidative cyclization of 2-pyridine ketone hydrazones was achieved in ethyl acetate at room temperature in the presence of an MCM-41-anchored bidentate 2-aminoethylamino copper(II) catalyst [MCM-41-2N-Cu(OAc) (2) ], in the presence of air as the oxidant, yielding a wide variety of [1,2,3]triazolo[1,5- a ]pyridines in mostly good to high yields. The present method was also applied to the direct one-pot synthesis of [1,2,3]triazolo[1,5- a ]pyridines from 2-acylpyridine derivatives and hydrazine monohydrate. Importantly, this supported copper(II) catalyst could be conveniently obtained via a simple procedure from easily available and inexpensive reagents, recovered by filtration of the reaction mixture, and reused at least seven times without a significant loss of catalytic activity.
If you are hungry for even more, make sure to check my other article about 7521-41-7, COA of Formula: C6H6N2O.
Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem