A copper-catalyzed aerobic oxidative annulation reaction of 2-aminopyridine/amidine with isothiocyanate has been reported. This strategy involving C–N/N–S bond formations provides various 5-amino/imino-substituted 1,2,4-thiadiazole derivatives under a Cu/O2 catalytic system. This method has demonstrated high reactivity, mild reaction conditions, and a broad substrate scope. Furthermore, the synthetic
已经报道了2-氨基吡啶/ am与异硫氰酸盐的铜催化的需氧氧化环化反应。这种涉及C–N / N–S键形成的策略可在Cu / O 2催化体系下提供各种5-氨基/亚氨基取代的1,2,4-噻二唑衍生物。该方法显示出高反应活性,温和的反应条件和广泛的底物范围。此外,该方法的综合实用性通过进一步的修改得到了证明。