Direct C4–H phosphonation of 8-hydroxyquinoline derivatives employing photoredox catalysis and silver catalysis
作者:Xiaoxue Su、Fan Yang、Yusheng Wu、Yangjie Wu
DOI:10.1039/c8ob00370j
日期:——
A simple and efficient protocol for the C4–H phosphonation of 8-hydroxyquinoline derivatives was developed under a photoredox/silver(I) cocatalysis system, providing a new approach to phosphonated 8-hydroxyquinoline derivatives. Note that the reaction did not occur at the C5 site, but regioselectively at an unusual C4 site. Moreover, the reaction proceeded smoothly under mild reaction conditions (a
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
Quinolin-8-yl Formate: A New Option for Small-Scale Carbonylation Reactions in Microwave Reactors
作者:J. Craig Ruble、Christopher J. Maddocks、Sivakumar V. Aathimanikandan、Jeffery Richardson
DOI:10.1055/s-0040-1707187
日期:2020.10
benzyl halides in a microwave reactor by using quinolin-8-yl formate is described. The resulting 8-acyloxyquinolines were shown to be more reactive than phenylesters in acyl-transfer reactions, and their utility for the production of esters and amides was demonstrated.