An Efficient Approach for the Esterification of 5-Chloroquinolin-8-ol through
Steglich Reaction and their Antioxidant Applications
作者:A. Kadirappa、Ayyakannu Arumugam Napoleon
DOI:10.14233/ajchem.2023.27798
日期:——
Esterification of organic molecules offers a critical process for chemical modifications. Among the various methodologies, Steglich conditions gave easiest and mild pathways. O-Acylation of 5-chloro-8-hydroxyquinoline with different acylating counterparts has been investigated. Among the various catalysts used, N,N-dimethylpyridin-4-amine (DMAP) in the presence of N,N′-dicyclohexyl carbodiimide (DCC) displayed
A practical and efficient protocol for Ag/Ru-cocatalyzed regioselective C-H amination of 8-hydroxyquinoline esters with pyrazoles was developed, This reaction proceeded smoothly via a photoredox-mediated direct C-H/N-H oxidative coupling process. The remarkable features of this reaction include the wide substrate scope, mild reaction conditions and high regioselectivity at the C4 site of the quinolinyl
explore the application in direct nitroquinoline synthesis, this reaction was subsequently modified as an equivalent reaction in a Schlenk tube. More significantly, after a constant attempt, nitrated derivative was obtained in optimized condition with a zinc(II) sulfate catalyst, where some substrates with strong electron-withdrawing group were first nitrated by a directly catalyzed condition. This new