One-pot access to sulfonylated naphthalenediols/hydroquinones from naphthols/phenols with sodium sulfinates in an aqueous medium
作者:Lingxin Meng、Ruike Zhang、Yuqiu Guan、Tian Chen、Zhiqiang Ding、Gongshu Wang、Aikebaier Reheman、Zhangpei Chen、Jianshe Hu
DOI:10.1039/d0nj05285j
日期:——
aqueous medium has been developed with up to 97% yield. The whole reaction requiring no transition-metal catalysts could proceed smoothly with hypervalent iodine compounds as the oxidant. Both naphthols and phenols were viable with inexpensive and readily available sodium sulfinates as the sulfonylation reagents under an ambient atmosphere. This procedure is scalable, and the products could be easily obtained
The electrochemical in-situ oxidative sulfonylation of phenols with sulfinicacids access to sulfonylated hydroquinones has been developed. A series of sulfonylated hydroquinones were prepared under mild mediator-, catalyst- and exogenous-oxidant-free conditions. Notably, such an electrochemical in-situ-oxidative synthetic strategy presented wide functional group tolerance and amenability to gram-scale
The oxidative coupling reaction between hydroquinone or catechols and various sodiumbenzenesulfinates was investigated using the laccase from Trametes versicolor, in the presence of O2 in a phosphate buffer solution at room temperature to afford sulfonyl benzenediols in 75–95% yield.
Ammonium iodide-promoted unprecedented arylsulfonylation of quinone with sodium arylsulfinates
作者:Jin-Wei Yuan、Shuai-Nan Liu、Ling-Bo Qu
DOI:10.1016/j.tet.2017.10.022
日期:2017.11
A novel ammonium iodide-promoted arylsulfonylation of quinones with sodium arylsulfinates has been explored. This reaction proceeded smoothly through unique nucleophilic addition reaction and produced the arylsulfonylation products in moderate to good yields. The reactions proceeded efficiently over a broad range of substrates with good regioselectivity and functional group tolerance. (C) 2017 Elsevier Ltd. All rights reserved.