Trends in carbazole synthesis–an update (2013–2023)

LAT Allen, P Natho - Organic & Biomolecular Chemistry, 2023 - pubs.rsc.org
The interest of scientists in the carbazole core has risen steadily over the last 30 years,
particularly over the last decade given its presence in several active pharmaceutical …

Emerging Role of Green Oxidant I2/DMSO in Organic Synthesis

PN Reddy, BVS Reddy, P Padmaja - Current Organic Synthesis, 2018 - benthamdirect.com
Background: I2/DMSO oxidative system catalyzed reactions have received considerable
attention because they represent the advantages of being greener, efficient, atom …

Anodic Dehydrogenative Aromatization of Tetrahydrocarbazoles Leading to Carbazoles

E Sato, A Yukiue, K Mitsudo, S Suga - Organic Letters, 2023 - ACS Publications
Anodic oxidation-promoted aromatization of 1, 2, 3, 4-tetrahydrocarbazoles was achieved.
Nitrogen-protected tetrahydrocarbazoles could be converted to the corresponding …

Electrochemical Annulation of Indole-Tethered Alkynes Enabling Synthesis of Exocyclic Alkenyl Tetrahydrocarbazoles

J He, A Liu, Y Yu, C Wang, H Mei… - The Journal of Organic …, 2023 - ACS Publications
An electrochemical sulfonylation-triggered cyclization reaction of indole-tethered terminal
alkynes with sulfinates as sulfonyl sources has been developed, which affords exocyclic …

Highly efficient, recyclable cerium-phosphate solid acid catalysts for the synthesis of tetrahydrocarbazole derivatives by Borsche–Drechsel cyclization

HM Altass, AS Khder, SA Ahmed, M Morad… - Reaction Kinetics …, 2021 - Springer
In this work, a series of cerium phosphate catalysts with different cerium phosphate molar
ratios have been synthesized. The prepared catalysts were characterized by means of FTIR …

Divergent and orthogonal approach to carbazoles and pyridoindoles from oxindoles via indole intermediates

T Mandal, G Chakraborti, S Karmakar, J Dash - Organic letters, 2018 - ACS Publications
The previously unexplored Grignard addition to oxindoles provides a regiospecific approach
to 2-and 2, 3-disubstituted indole derivatives in high yields via a one-pot aromatization …

Metal-free iodine-catalyzed direct arylthiation of substituted anilines with thiols

D Yang, K Yan, W Wei, J Zhao, M Zhang… - The Journal of …, 2015 - ACS Publications
Iodine-catalyzed direct arylthiation of substituted anilines for the synthesis of various diaryl
sulfides has been developed under metal-and solvent-free conditions. The present method …

Brønsted Acid Catalyzed One-Pot Benzannulation of 2-Alkenylindoles under Aerial Oxidation: A Route to Carbazoles and Indolo[2,3-a]carbazole Alkaloids

S Saha, A Banerjee, MS Maji - Organic letters, 2018 - ACS Publications
A one-pot, protecting-group-free benzannulation of 2-alkenylindoles with readily available 1,
3-dicarbonyls is demonstrated to construct structurally diverse carbazoles. The use of a …

Benzannulation of 2‐Alkenylindoles using Aldehydes by Sequential Triple‐Relay Catalysis: A Route to Carbazoles and Carbazole Alkaloids

A Banerjee, S Sahu, MS Maji - Advanced Synthesis & Catalysis, 2017 - Wiley Online Library
Benzannulation of 2‐alkenylindoles with readily available aldehydes, under one‐pot
sequential triple‐relay‐catalysis, provides an easy access to several structurally unique …

A Palladium-Catalyzed Ullmann Cross-Coupling/Reductive Cyclization Route to the Carbazole Natural Products 3-Methyl-9H-carbazole, Glycoborine, Glycozoline …

Q Yan, E Gin, M Wasinska-Kalwa… - The Journal of …, 2017 - ACS Publications
The title natural products 2–7 have been prepared by reductive cyclization of the relevant 2-
arylcyclohex-2-en-1-one (eg 20) to the corresponding tetrahydrocarbazole and …