B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub> catalysed reduction of para-quinone methides and fuchsones to access unsymmetrical diaryl- and triarylmethanes: elaboration to beclobrate
作者:Sriram Mahesh、Ramasamy Vijaya Anand
DOI:10.1039/c7ob02007d
日期:——
A mild and efficient method for the synthesis of unsymmetrical diaryl- and triarylmethanes through a B(C6F5)3 catalyzed reduction of para-quinone methides and fuchsones respectively, using the Hantzsch ester as a reducing source has been developed. Detailed mechanistic investigations revealed that the reaction actually proceeds through a Lewis acid–base pair complex derived from B(C6F5)3 and the Hantzsch
已开发出一种温和有效的方法,该方法通过使用Hantzsch酯作为还原源,通过B(C 6 F 5)3分别催化对苯醌甲基化物和丁二酮的还原反应,合成不对称的二芳基甲烷和三芳基甲烷。详细的机械研究表明,该反应实际上是通过衍生自B(C 6 F 5)3和汉茨(Hantzsch)酯的路易斯酸-碱对络合物进行的。
Uranyl-catalyzed hydrosilylation of <i>para</i>-quinone methides: access to diarylmethane derivatives
作者:Jipan Yu、Siyu Chen、Kang Liu、Liyong Yuan、Lei Mei、Zhifang Chai、Weiqun Shi
DOI:10.1039/d0ob02455d
日期:——
An efficient and convenient uranyl-catalyzed reductive hydrosilation reaction of para-quinone methides was developed by employing silane as the reductant.
Electrochemical Reductive Carboxylation of <i>para</i>‐Quinone Methides with CO<sub>2</sub>
作者:Yunying Yan、Haiqiong Li、Fenfen Xie、Wenhua Lu、Zhengbing Zhang、Linhai Jing、Pan Han
DOI:10.1002/adsc.202300789
日期:2023.11.21
Herein, electrochemicalreductivecarboxylation of para-quinone methides with CO2 was developed. A variety of value-added carboxylic acids can be accessed in moderate to excellent yields. Preliminary studies showed that para-quinone methides were reduced to benzyl carbanion during the reaction. This protocol features high atom economy, operational simplicity, and environmental friendliness, enabling