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Water-soluble Superbulky (η6-p-cymene) Ruthenium(II) Amine: Active Catalyst in Oxidative Homocoupling of Arylboronic Acids and Hydration of Organonitriles

Abstract

Phosphine free water-soluble superbulky amine-ruthenium-arene complex (2) encompassing 2,6-bis(diphenylmethyl)-4-methylaniline was synthesised in good yield. 2 was characterized by FT-IR, 1H NMR, 13C NMR spectroscopy, TGA and elemental analyses. Structure of 2 was confirmed by single-crystal X-ray diffraction study. The ruthenium centre in 2 adapts in the pseudo-octahedral geometry by η6-p-cymene ring, bulky aniline ligand along with two chloro groups. Besides, the complex 2 was efficaciously employed as catalyst in hydration of organonitriles to amides. This reaction proceeds efficiently for a wide range of substrates in environmentally benign medium and economically reasonable synthetic route to the amides in good yield. In addition, 2 acts as excellent catalyst in oxidative homocoupling of arylboronic acid in water. A range of arylboronic acids undergoes a homocoupling reaction in the presence of catalyst 2 to yield the symmetrical biaryls in reasonable to good yield.

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Publication details

The article was accepted on 30 Jul 2018 and first published on 31 Jul 2018


Article type: Paper
DOI: 10.1039/C8NJ03715A
Citation: New J. Chem., 2018, Accepted Manuscript
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    Water-soluble Superbulky (η6-p-cymene) Ruthenium(II) Amine: Active Catalyst in Oxidative Homocoupling of Arylboronic Acids and Hydration of Organonitriles

    P. Ganesan, N. Muthukumaran, A. N. Mannem, R. Karupnaswamy, M. Mannarsamy, M. Vaddamanu and R. Gembali, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ03715A

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