Silylative aromatization of <i>p</i>-quinone methides under metal and solvent free conditions
作者:Tingting Li、Yuzhu Wu、Wenzeng Duan、Yudao Ma
DOI:10.1039/d1ra03193g
日期:——
A base-mediated silylation reaction leading to benzyl silanes has been developed. Under transition-metal and solventfreeconditions, the silylation of a wide array of p-quinone methides is achieved using a Cs2CO3 catalyst in yields up to 96%. Carboxylation of the as-obtained organosilane with gaseous CO2 provides a new synthetic protocol for the preparation of carboxylic acid.
已经开发了一种产生苄基硅烷的碱介导的甲硅烷基化反应。在无过渡金属和无溶剂条件下,使用 Cs 2 CO 3催化剂可实现多种对醌甲基化物的甲硅烷基化,收率高达 96%。用气态 CO 2对所获得的有机硅烷进行羧基化为制备羧酸提供了一种新的合成方案。
Magnesium-Mediated Umpolung Carboxylation of <i>p</i>-Quinone Methides with CO<sub>2</sub>
作者:Yunying Yan、Jianjun Hao、Fenfen Xie、Fen Han、Linhai Jing、Pan Han
DOI:10.1021/acs.joc.3c01632
日期:2023.10.20
Magnesium-mediated reductive carboxylation of p-QMs with CO2 via an Umpolung strategy has been developed, which can be used for the preparation of various aryl acetic acids. This protocol featured high atom economy, mild conditions, and operational simplicity. The creation of this Umpolung carboxylation of p-QMs will unprecedentedly extend the application of p-QMs to nucleophilic reagents.