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4. Easy access to isoquinolines and tetrahydroquinolines from ketoximes and alkynes via rhodium-catalyzed C-H bond activation

Author

Parthasarathy, Kanniyappan and Chien-Hong Cheng

Subjects
Elimination reactions -- Usage, Oxidation-reduction reaction -- Usage, Quinoline -- Chemical properties, Quinoline -- Structure, Rhodium -- Chemical properties, Rhodium -- Structure, Biological sciences, Chemistry
Abstract

A convenient and highly regioselective synthesis of substituted isoquinoline derivatives from various aromatic ketoximes and alkynes via a one-pot, rhodium-catalyzed C-H bond activation is described. A probable mechanism that involves chelation-assisted C-H activation via oxidative addition of Rh(I) to an ortho-C-H bond, insertion of the alkyne, reductive elimination, intramolecular electrocyclization, and aromatization is also described.

Published
2009

6. Rh(III)-Catalyzed Oxidative C-2 Coupling of N -Pyridinylindoles with Benzo[ b ]thiophene 1,1-Dioxides via C-H Bond Activation.

Author

Kumaran S and Parthasarathy K

Abstract

An efficient Rh(III)-catalyzed cross-dehydrogenative coupling of N -pyridinylindoles with benzo[ b ]thiophene 1,1-dioxides has been developed through directing-group-assisted C-H activation. This transformation constructs a new C-C bond from two inert C-H bonds in a one-pot reaction. The present reaction is compatible with various functional groups with respect to indoles and benzothiophene[ b ] 1,1-dioxides. Furthermore, the emission properties of synthesized compounds have been explored.

Published
2021
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