作者:Jin-Ling Dai、Nan-Qi Shao、Jin Zhang、Run-Ping Jia、Dong-Hui Wang
DOI:10.1021/jacs.7b06785
日期:2017.9.13
A Cu(II)-catalyzed ortho-selective functionalization of free phenols with trifluoroborates to afford Csp2-Csp3 coupling products under mild conditions has been developed. A variety of functional groups on the phenol and the potassium aminomethyltrifluoroborate substrates were found compatible, furnishing the corresponding products in moderate to excellent yields. A single-electron transfer radical
已经开发出一种 Cu(II) 催化的游离酚与三氟硼酸盐的邻位选择性官能化,以在温和条件下提供 Csp2-Csp3 偶联产物。发现苯酚和氨基甲基三氟硼酸钾底物上的各种官能团是相容的,以中等至极好的收率提供相应的产品。提出了一种涉及六元过渡态的单电子转移自由基偶联机制,以合理化反应中的高水平邻位选择性。该协议提供了对邻氨基甲基取代酚、非天然氨基酸和其他生物活性小分子的直接访问。