C–H activation and subsequent C–C bond formation in rigid alkenes catalyzed by Ru(iii) metallates. Issue 1 (19th October 2022)

• Record Type: Journal Article
• Authors: Dharani, S.; Kalaiarasi, G.; Lynch, Vincent M.; Srinivasan, K.; Prabhakaran, R.
• Is Part Of: Reaction chemistry & engineering. Volume 8:Issue 1(2023)
• Page Start: 164
• Page End: 174
• Publication Date: 2022-10-19
• Subjects: Reaction mechanisms (Chemistry) -- Periodicals; Chemical engineering -- Periodicals; Chemical engineering; Reaction mechanisms (Chemistry); Periodicals; 547.705
• DOI: 10.1039/d2re00317a
• Languages: English
• ISSNs: 2058-9883

Abstract

Abstract : Pyrazolone derived Ru(iii ) complexes were synthesized and applied as catalysts in the C–H activation reaction of α, β-unsaturated carbonyl compounds. In addition to Heck type coupling, ethanol mediated ethoxylation was also witnessed. Abstract : Pyrazolone derived Ru(iii ) complexes were synthesized and comprehensively characterized by spectral techniques. The true nature of the complexes was revealed by X-ray crystallography in which the ligand coordinated in a monobasic bidentate fashion. The catalytic efficiency of the complexes was analyzed in the C–H activation reaction of α, β-unsaturated carbonyl compounds. The reactions proceeded well in ethanol with potassium hydroxide as a base. In addition to Heck type coupling at the CC bond, ethanol mediated ethoxylation of the C–Cl bond at the C2 position of the quinoline moiety was witnessed and validated by establishing the structure of a representative intermediate through X-ray diffraction analysis. All the catalytic products were characterized by 1 H and 13 C NMR analysis and representatives by mass spectral studies.