Single‐step oxidative homocoupling of aryl Grignard reagents via Co(II), Ni(II) and Cu(II) Complexes under air |
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| Authors: | Aparna P I Bhat Badekai Ramachandra Bhat |
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| Affiliation: | Catalysis and Materials Laboratory, Department of Chemistry, National Institute of Technology Karnataka, Srinivasanagar‐575025, India |
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| Abstract: | A simple catalytic system of direct synthesis for the symmetrical biaryls using catalytic amounts of Co(II), Ni(II) and Cu(II) complexes has been developed. The reaction system involves in situ synthesis of Grignard reagents. The complexes, containing bidentate Schiff base and dmit (2‐thioxo‐1,3‐dithiole‐4,5‐dithiolate) ligands, were compatible with diverse functionalities and afford a high yield of biaryls in a single step, proving to be promising catalysts in homocoupling reactions. Atmospheric oxygen is used as an oxidant which renders a green, simple and economical catalytic route. Copyright © 2014 John Wiley & Sons, Ltd. |
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| Keywords: | Schiff base homocoupling Grignard reagents biaryl atmospheric oxygen |
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