Rh-Catalyzed regioselective C–H activation and C–C bond formation: synthesis and photophysical studies of indazolo[2,3-a]quinolines

Sundaravel Vivek Kumar; Sundaram Ellairaja; Vanaparthi Satheesh; Vairathevar Sivasamy Vasantha; Tharmalingam Punniyamurthy

doi:10.1039/C8QO00557E

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Rh-Catalyzed regioselective C–H activation and C–C bond formation: synthesis and photophysical studies of indazolo[2,3-a]quinolines†

Sundaravel Vivek Kumar,

^a Sundaram Ellairaja,^b Vanaparthi Satheesh,^a Vairathevar Sivasamy Vasantha*^b and Tharmalingam Punniyamurthy

*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
E-mail: tpunni@iitg.ernet.in

^b Department of Chemistry, Madurai Kamaraj University, Madurai-625 021, India
E-mail: vasantham999@yahoo.co.in

Abstract

Rh(III)-Catalyzed regioselective C–H functionalization of 2-aryl-2H-indazoles with alkynes is reported to furnish indazoloquinolines utilizing Cu(OAc)₂·H₂O as an oxidant, which facilitates the reductive elimination step. Kinetic isotope studies suggest that C–H activation is presumably the product determining step. The products display a strong blue emission with high quantum yields.

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DOI: https://doi.org/10.1039/C8QO00557E
Article type: Research Article
Submitted: 22 رمضان 1439
Accepted: 27 شوال 1439
First published: 27 شوال 1439

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Org. Chem. Front., 2018,5, 2630-2635

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Rh-Catalyzed regioselective C–H activation and C–C bond formation: synthesis and photophysical studies of indazolo[2,3-a]quinolines

S. Vivek Kumar, S. Ellairaja, V. Satheesh, V. Sivasamy Vasantha and T. Punniyamurthy, Org. Chem. Front., 2018, 5, 2630 DOI: 10.1039/C8QO00557E

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Organic Chemistry Frontiers

Rh-Catalyzed regioselective C–H activation and C–C bond formation: synthesis and photophysical studies of indazolo[2,3-a]quinolines†

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Rh-Catalyzed regioselective C–H activation and C–C bond formation: synthesis and photophysical studies of indazolo[2,3-a]quinolines

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