烯丙基对甲苯基亚砜通过初始质子异构化并随后添加甲醇而与甲醇钠甲醇反应,得到2-甲氧基丙基对甲苯基亚砜。与此相反,用哌啶的产率反应,作为主产物,烯丙醇和ñ - p -tolylsulphenylpiperidine。这些是通过亲核置换,在硫的异构体,烯丙基甲苯形成p -sulphenate其与亚砜平衡。
烯丙基对甲苯基亚砜通过初始质子异构化并随后添加甲醇而与甲醇钠甲醇反应,得到2-甲氧基丙基对甲苯基亚砜。与此相反,用哌啶的产率反应,作为主产物,烯丙醇和ñ - p -tolylsulphenylpiperidine。这些是通过亲核置换,在硫的异构体,烯丙基甲苯形成p -sulphenate其与亚砜平衡。
Synthesis of benzyl sulfides<i>via</i>substitution reaction at the sulfur of phosphinic acid thioesters
作者:Yoshitake Nishiyama、Takamitsu Hosoya、Suguru Yoshida
DOI:10.1039/d0cc02039g
日期:——
An ambident electrophilicity of phosphinicacid thioesters is disclosed. Unexpected carbon-sulfur bond formation took place in the reaction between phosphinicacid thioesters and benzyl Grignard reagents. The developed method for benzyl sulfides has a wide substrate scope and was applicable for the synthesis of a drug analog.
Synthesis of benzyl thioether derivatives via N-heterocyclic carbene palladium(II)-catalyzed cross coupling of benzylammonium salts with thiophenols
作者:Tao Wang、Jiarui Guo、Yongli Xu、Xiaobo Wang、Yan Wang、Dandan Feng、Lantao Liu
DOI:10.1016/j.jorganchem.2021.122176
日期:2022.1
A new route to benzyl thioether derivatives has been developed via the N-heterocyclic carbene palladium(II)-catalyzed cross coupling of benzylammonium salts with thiophenols. Under the optimal conditions, different benzylammonium salts could be well tolerated. Meanwhile, various kinds of aryl thiophenols and heteroaryl thiophenols could be used as efficient substrates, generating broad array of benzyl
通过 N-杂环卡宾钯 (II) 催化的苄基铵盐与苯硫酚的交叉偶联,开发了一种新的苄基硫醚衍生物途径。在最佳条件下,可以很好地耐受不同的苄基铵盐。同时,各种芳基苯硫酚和杂芳基苯硫酚可作为有效底物,在数小时内以良好到高产率生成广泛的苄基硫醚。
Stereoselective Control by Face-to-Face Versus Edge-to-Face Aromatic Interactions: The Case of<i>C</i><sub>3</sub>-Ti<sup>IV</sup>Amino Trialkolate Sulfoxidation Catalysts
作者:Gabriella Santoni、Miriam Mba、Marcella Bonchio、Williamâ A. Nugent、Cristiano Zonta、Giulia Licini
DOI:10.1002/chem.200902072
日期:2010.1.11
The stereoselective oxidation of differently functionalised benzyl phenylsulfides has been examined by using enantiopure TiIV trialkanolamine complexes. These complexes efficiently catalyse the sulfoxidation with good stereoselectivities. The data highlight the contribution to the stereoselectivity of steric effects and non‐covalent π–π interactions between the aromatic rings of the TiIV complex and
KO<sup><i>t</i></sup>Bu/DMF-Mediated Hydroalkylation of Alkenes via Benzylic C–H Bond Activation
作者:Qiming Zhu、Jiajia Long、Xianchen Song、Kaifang Wang、Jingkai Zeng、Yuyuan Fan
DOI:10.1021/acs.joc.3c02238
日期:2024.3.15
Catalytic hydroalkylation reaction of alkenes with benzylic hydrocarbons involving t-BuOK/DMF-mediated benzylic C–Hbond activation is demonstrated. This direct and operational simple protocol affords a rapid and reliable access to a wide scope of benzylic compounds in good-to-excellent yields. The benzylic C–H's of either activated diarylmethanes (pKa ∼ 32.2) and benzyl thioethers (pKa ∼ 30.8) or
证明了烯烃与苯甲基烃的催化加氢烷基化反应涉及t -BuOK/DMF 介导的苯甲基 C-H 键活化。这种直接且操作简单的方案可以快速、可靠地获得各种苄基化合物,且产率从良好到优异。活化二芳基甲烷(p K a ∼ 32.2)和苄基硫醚(p K a ∼ 30.8)或惰性烷基苯的苄基C-H都可以作为有用的合成平台,在温和的反应条件下方便地烷基化。