Recent Advances in the Regioselective Synthesis of Indoles via C–H Activation/Functionalization

Inder Kumar; Rakesh Kumar; Upendra Sharma

doi:10.1055/s-0037-1609733

Synthesis, Table of Contents

Synthesis 2018; 50(14): 2655-2677
DOI: 10.1055/s-0037-1609733

review

Recent Advances in the Regioselective Synthesis of Indoles via C–H Activation/Functionalization

Authors

Inder Kumar ‡

^aNatural Product Chemistry and Process Development Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, 176061, India

^bAcademy of Scientific and Innovative Research, CSIR-IHBT, Palampur, Himachal Pradesh 176061, India Email: upendra@ihbt.res.in Email: upendraihbt@gmail.com
Rakesh Kumar ‡

^aNatural Product Chemistry and Process Development Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, 176061, India

^bAcademy of Scientific and Innovative Research, CSIR-IHBT, Palampur, Himachal Pradesh 176061, India Email: upendra@ihbt.res.in Email: upendraihbt@gmail.com
Upendra Sharma*

^aNatural Product Chemistry and Process Development Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, 176061, India

^bAcademy of Scientific and Innovative Research, CSIR-IHBT, Palampur, Himachal Pradesh 176061, India Email: upendra@ihbt.res.in Email: upendraihbt@gmail.com

Abstract

All articles of this category

^‡ These authors contributed equally to this review.

Abstract

Indole is an important heterocyclic motif that occurs ubiquitously in bioactive natural products and pharmaceuticals. Immense efforts have been devoted to the synthesis of indoles starting from the Fisher indole synthesis to the recently developed C–H activation/functionalization-based methods. Herein, we have reviewed the progress made on the regioselective synthesis of functionalized indoles, including 2-substituted, 3-substituted and 2,3-disusbstituted indoles, since the year 2010.

1 Introduction

2 Metal-Catalyzed Synthesis of 2-Substituted Indoles

3 Metal-Catalyzed Synthesis of 3-Substituted Indoles

4 Metal-Free Synthesis of 3-Substituted Indoles

5 Metal-Catalyzed 2,3-Disubstituted Indole Synthesis

5.1 Metal-Catalyzed Intramolecular 2,3-Disubstituted Indole Synthesis

5.2 Metal-Catalyzed Intermolecular 2,3-Disubstituted Indole Synthesis

6 Metal-Free 2,3-Disubstituted Indole Synthesis

6.1 N-Protected 2,3-Disubstituted Indole Synthesis

6.2 N-Unprotected 2,3-Disubstituted Indole Synthesis

7 Applications

8 Summary and Outlook

Key words

indoles - C–H activation - catalytic - metal-free - natural products

Full Text

References

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