J. Richard Premkumar
Indian Institute of Chemical Technology
14 Papers
160 Citations
J. Richard Premkumar is an academic researcher from Indian Institute of Chemical Technology. The author has contributed to research in topics: Catalysis & Chemistry. The author has an hindex of 9, co-authored 14 publications. Previous affiliations of J. Richard Premkumar include Bishop Heber College & Florida State University College of Arts and Sciences.
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Papers
Cobalt(III) catalyzed C-8 selective C–H and C–O coupling of quinoline N-oxide with internal alkynes via C–H activation and oxygen atom transfer
TL;DR: An efficient, scalable, atom-economical, regio-selective air stable Cp*Co(iii) catalyzed C-H and C-O coupling via a C- H activation/oxygen atom transfer reaction of quinoline N-oxide and an internal alkyne is reported.
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C-8-Selective Allylation of Quinoline: A Case Study of β-Hydride vs β-Hydroxy Elimination
TL;DR: An unprecedented C(8)-H bond allylation of quinoline with allyl carbonate and allyl alcohol catalyzed by Cp*Co(III) using a traceless directing group via β-oxygen and β-hydroxy elimination is described.
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Isolation of Cp*CoIII–Alkenyl Intermediate in Efficient Cobalt-Catalyzed C−H Alkenylation with Alkynes
TL;DR: A general and efficient procedure for C-H alkenylation of arenes with a broad substrate scope catalyzed by Cp*CoIII was demonstrated with alkynes and a highly selective mono-alkenylation and sequential bis-C-H bond functionalization was displayed to exemplify the versatility of the cobalt catalyst.
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Synthesis and evaluation of new salicylaldehyde-2-picolinylhydrazone Schiff base compounds of Ru(II), Rh(III) and Ir(III) as in vitro antitumor, antibacterial and fluorescence imaging agents
Narasinga Rao Palepu,Saphidabha L. Nongbri,J. Richard Premkumar,Akalesh K. Verma,Kaushik Bhattacharjee,Santa Ram Joshi,Scott Forbes,Yurij Mozharivskyj,Romita Thounaojam,Kripamoy Aguan,Mohan Rao Kollipara +10 more
TL;DR: Half-sandwich ruthenium, rhodium and iridium compounds were obtained by treatment of metal precursors with salicylaldehyde-2-picolinylhydrazone (HL) by in situ metal-mediated deprotonation of the ligand.
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The significance of the alkene size and the nature of the metal ion in metal–alkene complexes: a theoretical study
TL;DR: The study, which also aims to evaluate the effect of the size of the alkyl portion attached to the π-system on the complexation energy, indicates a linear relationship between the two.
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