Synthesis of quinolines via acceptorless dehydrogenative tandem cyclization of 2-amionbenzyl alcohol with alcohols using magnetic CuNiFeO nanocatalyst

Synthesis of N‐Heterocycles via Oxidant‐Free Dehydrocyclization of Alcohols Using Heterogeneous Catalysts

“…[27] Although some works have adopted alloy metal catalysts to achieve these reactions,n or easonable explanation for their activity has been presented, yet. [28][29][30][31] In these cases,w ea ssume that the change of metal d-band center may be the main reason for the superior performance of certain alloy metal catalysts compared to others.…”

“…Another interesting and innovative non-noble metal catalyst for this class of transformations was introduced by Bhanage and co-workers.Specifically,they developed amagnetically separable CuNiFeO catalyst for the domino transformation of 2-aminobenzyl alcohols with secondary alcohols to give quinolines in the presence of KO t Bu (Scheme 14 a). [31] Thec atalyst was prepared by the sol-gel method. Appropriate amounts of metal salt and citric acid are dissolved in distilled water to generate ag el.…”

Synthesis of N‐Heterocycles via Oxidant‐Free Dehydrocyclization of Alcohols Using Heterogeneous Catalysts

“…Specifically, they developed a magnetically separable CuNiFeO catalyst for the domino transformation of 2‐aminobenzyl alcohols with secondary alcohols to give quinolines in the presence of KO t Bu (Scheme 14 a). [31] The catalyst was prepared by the sol–gel method. Appropriate amounts of metal salt and citric acid are dissolved in distilled water to generate a gel.…”

Copper based on diaminonaphthalene-coated magnetic nanoparticles as robust catalysts for catalytic oxidation reactions and C–S cross-coupling reactions

“…Moreover, it is seen that selectivity remained the same in all solvents and sulfoxide is the only product of this system. Then, different oxidation agents such as NaIO 4 Because of the successful oxidation of methyl phenyl sulde, the reactions of different suldes under optimized conditions were examined (Table 2). Sulfoxides were prepared at excellent conversion in a short reaction time.…”

“…2 It is known that homogeneous catalysts, because of the solubility in the reaction medium, have good performance. [3][4][5] However, these materials have disadvantages such as the generation of highly toxic wastes 6 and timeconsuming catalyst separation. 7 Additionally, metal catalysts are recycled with difficulty, and they produce high amounts of wastes.…”