Recent Progress on Transition Metal Catalyzed Macrocyclizations Based on C− H Bond Activation at Heterocyclic Scaffolds

S Das, TK Pradhan, R Samanta - Chemistry–An Asian Journal, 2024 - Wiley Online Library
Macrocycles are essential in protein‐protein interactions and the preferential intake of
bioactive scaffolds. Macrocycles are commonly synthesized by late‐stage …

Macrocyclization of Maleimide-Decorated Peptides via Late-Stage Rh (III)-Catalyzed Trp (C7) Alkenylation

Y Zhang, S Hu, Y Li, Y Wang, T Yu, Q Chen… - Organic …, 2023 - ACS Publications
Here, we report a novel strategy for constructing maleimide-containing peptides and cyclic
peptides using Rh (III)-catalyzed tryptophan (Trp)(C7) alkenylation, which is challenging due …

Construction of multi-ring molecules through direct CH bond transformation

Y Nishii, K Hirano, T Satoh… - Bulletin of the Chemical …, 2024 - academic.oup.com
Transition metal-catalyzed aromatic functionalization reactions are highly important for the
construction of various organic fine chemicals. In particular, the direct C (sp2)-H bond …

Ir‐Catalyzed Intramolecular Cyclization of 2‐Alkynyl Diaryl Sulfides for the Selective Synthesis of Sulfur‐Containing Polycyclic Compounds

T Shibata, T Iwaki, M Ito - Advanced Synthesis & Catalysis, 2022 - Wiley Online Library
We describe an Ir‐catalyzed intramolecular reaction of 2‐alkynyl diaryl sulfides, which gives
9‐arylidene‐9H‐thioxanthene derivatives via 6‐exo‐dig cyclization. When 2‐alkynylphenyl …

Rh (III)-catalyzed late-stage CH alkenylation and macrolactamization for the synthesis of cyclic peptides with unique Trp (C7)-alkene crosslinks

S Hu, Y Zhang, X Xie, L Li, K Chen, H Liu… - Chinese Chemical …, 2024 - Elsevier
Heterocycle-braced cyclic peptides have demonstrated enhanced metabolic stability,
increased potency and selectivity. Here, we present a rapid synthesis method for …

Ru (II)-Catalyzed Skeletal Editing of Oxindole with Internal Alkyne To Synthesize C7-Alkylated Indole Derivatives

S Das, R Saha, S Bhadra, R Samanta - Organic Letters, 2024 - ACS Publications
A Ru (II)-catalyzed skeletal editing of oxindole scaffolds was established to afford C7-alkyl
acetate indole derivatives using internal alkyne and alkyl alcohol. The developed method is …

Site Specific C3‐Alkenylation of Indoles Mediated by In Situ C−H Iodination

Y Zhao, D Cao, JP Wan, Y Liu - Asian Journal of Organic …, 2025 - Wiley Online Library
The C3‐alkenylation of indoles have been developed by means of a novel in situ iodination
tactic which is capable of mediating the Heck coupling with alkenes. The method features …

Electrochemical C7‐Indole Alkenylation via Rhodium Catalysis

A Zangarelli, B Yuan… - Israel Journal of Chemistry, 2024 - Wiley Online Library
Indole derivatives are fundamental structural units in many bioactive compounds and
molecular materials. The site‐selective C7‐functionalization of these moieties has been …

Synthesis of C7-Functionalized Indoles through an Aromaticity Destruction–Reconstruction Process

T Xu, Q He, R Fan - Organic Letters, 2022 - ACS Publications
A process for the synthesis of C7-functionalized indoles using para-substituted 2-
alkynylanilines as starting materials was reported. The process involves a dearomatization …

Iron-Catalyzed Functionalization of Heterocycles Through C─ H Activation

C Pradhan, B Punji - 2024 - Springer
Abstract Strategic direct C─ H functionalization of heterocycles is a cutting-edge approach
for crafting and modifying diverse bio-relevant molecules featuring heterocyclic frameworks …