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- W4383314114 endingPage "1868" @default.
- W4383314114 startingPage "1854" @default.
- W4383314114 abstract "Herein we disclose a series of phosphine-free cobalt(II)-based catalytic systems bearing a redox non-innocent amine functionalized azo-aromatic pincer-like ligand for the synthesis of quinoline by dehydrogenative oxidation of 2-amino benzyl alcohol and subsequent coupling with a ketone. All the precatalysts were characterized thoroughly using various spectroscopic techniques and DFT studies. The catalytic protocol was efficient and versatile, providing major advances in the catalytic synthesis of quinoline. It was also found to be applicable to the gram-scale synthesis of quinolines as well. Several control experiments, kinetic studies, and spectroscopic studies have proposed a plausible reaction mechanism where the redox non-innocent azo-pyridine moiety acts to activate the α-C–H bond of alcohol and the subsequent Co(II) → Co(I) reduction leads to the formation of aldehyde. The generated aldehyde undergoes a base-catalyzed C–C bond formation reaction to result in the quinolines. The redox potential of the non-innocent azo-pyridine moiety controls the efficiency of the precatalysts. Thus, complex 3 with the most anodic reduction potential of the azo-pyridine moiety was found to be the best precatalyst among complexes 1–4." @default.
- W4383314114 created "2023-07-07" @default.
- W4383314114 creator A5001464365 @default.
- W4383314114 creator A5006299703 @default.
- W4383314114 creator A5010096626 @default.
- W4383314114 creator A5031979634 @default.
- W4383314114 creator A5038774171 @default.
- W4383314114 date "2023-07-06" @default.
- W4383314114 modified "2023-09-26" @default.
- W4383314114 title "Amine Functionalized Pincer-like Azo-aromatic Complexes of Cobalt and Their Catalytic Activities in the Synthesis of Quinoline via Acceptorless Dehydrogenation of Alcohols" @default.
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