Jharna Mahato, Shyam Sundar Mondal, Reetika Ravi, Tanmoy Kumar Saha
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Acceptorless Dehydrogenation of Alcohols to Carboxylic Acids Catalyzed by Nickel (II) Complexes Under Air
Here, we have synthesized two air stable, phosphine-free nickel–Schiff base complexes, 1a, [Ni(L1)2](ClO4)2 (L1 = N-phenyl-1-(pyridin-2-yl)methanimine) and 1b, [Ni(L2)2](ClO4)2 (L2 = 1-(6-bromopyridin-2-yl)-N-(4-methoxyphenyl)methanimine), and used them efficiently to catalyze the acceptorless dehydrogenation reaction of primary alcohols to carboxylic acids under aerobic conditions at 100°C. This methodology offers an atom-economical and sustainable approach for preparing various carboxylic acid derivatives by employing alcohols with KOH in the presence of the catalyst. The protocol was scrutinized across a range of aliphatic and aromatic alcohols, providing corresponding carboxylic acids with moderate to excellent yield. Additionally, mechanistic insights of the reaction were also investigated through intermediate mass analysis and controlled experiments.
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All new compounds should be satisfactorily identified and proof of their structure given according to generally accepted standards. Structural reports, such as papers exclusively dealing with synthesis and characterization, analytical techniques, or X-ray diffraction studies of metal-organic or organometallic compounds will not be considered. The editors reserve the right to refuse without peer review any manuscript that does not comply with the aims and scope of the journal. Applied Organometallic Chemistry publishes Full Papers, Reviews, Mini Reviews and Communications of scientific research in all areas of organometallic and metal-organic chemistry involving main group metals, transition metals, lanthanides and actinides. All contributions should contain an explicit application of novel compounds, for instance in materials science, nano science, catalysis, chemical vapour deposition, metal-mediated organic synthesis, polymers, bio-organometallics, metallo-therapy, metallo-diagnostics and medicine. Reviews of books covering aspects of the fields of focus are also published.
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