Regioselective deoxygenative C H trifluoromethylthiolation of heteroaryl N-oxides with AgSCF3

Ts2O Promoted Deoxygenative C-H Dithiocarbonation of Quinoline N-Oxides with Potassium O-Alkyl Xanthates

A simple, efficient, and practical method for the synthesis of S-quinolyl xanthates was developed via Ts2O-promoted deoxygenative C-H dithiocarbonation of quinoline N-oxides with various potassium O-alkyl xanthates. The reaction performed well under transition-metal-free, base-free, and room-temperature conditions with wide substrate tolerance. Employing potassium O-tert-butyl xanthate (tBuOCS2K) as a nucleophile, some valuable quinoline-2-thiones were unexpectedly obtained in a one-pot reaction without any additional base.

Tandem trifluoromethylthiolation and cyclization of N-aryl-3-butenamides with AgSCF3: divergent access to CF3S-substituted 3,4-dihydroquinolin-2-ones and azaspiro[4,5]dienones

A AgSCF3-mediated tandem trifluoromethylthiolaton and cyclization of N-aryl-3-butenamides was developed. It showed divergent reactivities and enabled the selective syntheses of CF3S-substituted 3,4-dihydroquinolin-2-ones and azaspiro[4,5]dienones. The selectivity was achieved through different...

Cp*Rh(III)-Catalyzed Regioselective C(sp3)-H Electrophilic Trifluoromethylthiolation of 8-Methylquinolines

Rh(III)-catalyzed regioselective trifluoromethylthiolation of the unactivated C(sp³)-H bond of 8-methylquinolines with bench-stable electrophilic trifluoromethylthiolating reagent via C(sp³)-H activation is explored. Various substituted 8-methylquinolines provided the products in good yields with high regioselectivity. Current reaction conditions are also applicable for the late-stage functionalization of natural molecule santonin and caffeine-substituted 8-methylquinoline.