What type of study is this?

This is a Experimental Study study.

October 11, 2025

Palladium(II)‐Catalyzed Distal CH Functionalization of 8‐Aminoquinolinamides: Facile Synthesis of Triarylmethane Derivatives

ARAnushka RastogiCentral Drug Research Institute MKM. Ravi KumarVinayaka Missions University MGManoj Kumar GangwarUniversity of Allahabad

Key Points

The palladium-catalyzed method achieves selective C5-alkylation in 8-aminoquinoline derivatives, expanding synthetic options significantly.
Up to a range of quinolinamides can be coupled with para-quinone methides, demonstrating notable functional group tolerance.
The mechanism involves chelation-induced CH functionalization, revealing a reversible metalation step within the catalytic cycle.
This technique diverges from traditional palladium-catalyzed approaches, presenting a unique site-selectivity in CH activation.

Abstract

Herein, a straightforward approach is reported for the palladium‐catalyzed oxidative remote CH alkylation of 8‐aminoquinoline derivatives using para‐ quinone methides. This method enables selective C5‐alkylation of quinolines and exhibits a site‐selectivity distinct from that typically observed in convetional palladium‐catalyzed sp 2 CH activation. The reaction proceeds via chelation‐induced remote CH functionalization, and a broad range of quinolinamides are successfully coupled with p ‐quinone methides, demonstrating excellent substrate scope and functional group tolerance. Preliminary mechanistic studies suggest a reversible CH metalation step as part of the catalytic cycle.

Ask AI

Helpful

Bookmark

View Full Paper