作者:Hien-Quang Do、Rana M. Kashif Khan、Olafs Daugulis
DOI:10.1021/ja805688p
日期:2008.11.12
A general method for copper-catalyzed arylation of sp (2) C-H bonds with p K a's below 35 has been developed. The method employs aryl halide as the coupling partner, lithium alkoxide or K 3PO 4 base, and DMF, DMPU, or mixed DMF/xylenes solvent. A variety of electron-rich and electron-poor heterocycles such as azoles, caffeine, thiophenes, benzofuran, pyridine oxides, pyridazine, and pyrimidine can
已经开发出一种铜催化 pKa 低于 35 的 sp (2) CH 键芳基化的通用方法。该方法采用芳基卤作为偶联配偶体、锂醇盐或K 3PO 4 碱以及DMF、DMPU或混合DMF/二甲苯溶剂。多种富电子和缺电子杂环,例如唑类、咖啡因、噻吩、苯并呋喃、氧化吡啶、哒嗪和嘧啶可以芳基化。此外,在苯环上具有至少两个吸电子基团的贫电子芳烃也可以被芳基化。独立合成了两种芳基铜-菲咯啉络合物中间体。