Perylenequinonoid-catalyzed photoredox activation for the direct arylation of (het)arenes with sunlight
作者:Shiwei Zhang、Zhaocheng Tang、Wenhao Bao、Jia Li、Baodang Guo、Shuping Huang、Yan Zhang、Yijian Rao
DOI:10.1039/c9ob00659a
日期:——
and photobiology. However, their applications in photocatalysis are yet to be explored. We report here that sunlight along with 1 mol% cercosporin, which is one of the perylenequinonoid pigments, catalyzes the direct C–H bond arylation of (het)arenes by a photoredox process with good regioselectivity and broad functional group compatibility. Furthermore, a gram-scale reaction with great conversions
天然存在的per醌类颜料(PQP)由于其出色的光敏性能而备受关注。作为光物理和光生物学的一个方面,它们已被广泛研究。然而,它们在光催化中的应用尚待探索。我们在这里报告说,阳光与1 mol%的头孢菌素(一种ylene醌类颜料之一)通过光氧化还原过程以良好的区域选择性和广泛的官能团相容性催化(杂)芳烃的直接C–H键芳基化。此外,即使通过含头孢菌素的上清液在液体发酵后不进行有机溶剂萃取和纯化的情况下,也实现了具有很大底物转化率的克级反应。