A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Recommanded Product: 2-(Piperidin-1-yl)benzaldehyde, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 34595-26-1, Name is 2-(Piperidin-1-yl)benzaldehyde, molecular formula is C12H15NO. In a Article, authors is Mukherjee, Nirmalya，once mentioned of 34595-26-1
A heterogeneous CoII/Al2O3 catalyst efficiently catalyses the N-arylation of N-heterocycles and open-chain secondary amines by activated chloroarenes and chloroheteroarenes under ligand-free conditions in water to give a series of functionalized tertiary amines. The catalyst was prepared by immobilizing CoBr2 onto the surface of Al2O3, and was characterized by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, and energy-dispersive X-ray analysis. This catalyst could be recycled up to six times without any appreciable loss of catalytic activity. A heterogeneous CoII/Al2O3 catalyst efficiently catalyses the N-arylation of N-heterocycles and open- or closed-chain secondary amines by activated chloroarenes and chloroheteroarenes under ligand-free conditions in water to give a series of functionalized tertiary amines.
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Reference：
Piperidine – Wikipedia,
Piperidine | C5H11595N – PubChem