Nitrosonium ion catalysis: aerobic, metal-free cross-dehydrogenative carbon–heteroatom bond formation
作者:Luis Bering、Laura D’Ottavio、Giedre Sirvinskaite、Andrey P. Antonchick
DOI:10.1039/c8cc08328b
日期:——
coupling of heteroarenes with thiophenols and phenothiazines has been developed under mild and environmentally benign reaction conditions. For the first time, NOx+ was applied for catalytic C–S and C–N bond formation. A comprehensive scope for the C–H/S–H and C–H/N–H cross-dehydrogenative coupling was demonstrated with >60 examples. The sustainable cross-coupling conditions utilize ambient oxygen as the
杂芳烃与硫酚和吩噻嗪的催化交叉脱氢偶联已在温和且环境友好的反应条件下得到发展。首次将NO x +用于催化C–S和C–N键的形成。用60多个例子证明了C–H / S–H和C–H / N–H交叉脱氢偶联的综合范围。可持续的交叉偶联条件利用环境氧作为末端氧化剂,而水是唯一的副产物。
Facile Synthesis of 2-(Phenylthio)phenols by Copper(I)-Catalyzed Tandem Transformation of C−S Coupling/C−H Functionalization
作者:Runsheng Xu、Jie-Ping Wan、Hui Mao、Yuanjiang Pan
DOI:10.1021/ja107758d
日期:2010.11.10
2-(Phenylthio)phenols were successfully synthesized from simple phenols and aromatic halides by using dimethyl sulfoxide as the oxidant. The transformation was accomplished via tandem copper(I)-catalyzed C-S coupling/C-H functionalization employing the CuI/L [L = (E)-3-(dimethylamino)-1-(2-hydroxyphenyl)prop-2-en-1-one] catalyst system. The mechanism of the reaction was elucidated based on an isotope