Palladium-catalyzed acetoxylation of arenes by 1,2,3-triazole-directed C<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:mrow><mml:mtext /></mml:mrow></mml:math>H activation
作者:Fen Zhao、Zhen Chen、Xinyuan Ma、Shaojun Huang、Yubo Jiang
DOI:10.1016/j.tetlet.2016.12.086
日期:2017.2
A facile and efficient method for the regioselective acetoxylation of 1,4-disubstituted 1,2,3-triazoles via Pd-catalyzed CH bond activation was developed. The cheap acetic acid was applied as the acetoxyl source to convert aromatic sp2 CH bonds into CO bonds in high regioselectivity, employing 1,2,3-triazole as an elegant directing group and K2S2O8 as the oxidant. A range of 1,2,3-triazoles bearing
通过Pd催化的C对1,4-二取代的1,2,3-三唑进行区域选择性乙酰氧基化的简便有效方法开发了H键激活。廉价的乙酸用作乙酰氧基源以转化芳香族sp 2 CH键成C键以1,2,3-三唑为优美的导向基团,以K 2 S 2 O 8为氧化剂,以高区域选择性形成O键。通过该反应可以容易地合成一系列带有乙酰氧基的1,2,3-三唑。