Metal-free Oxidative Coupling of Aromatic Alkenes with Thiols Leading to (<i>E</i>)-Vinyl Sulfones
作者:Leilei Wang、Huilan Yue、Daoshan Yang、Huanhuan Cui、Minghui Zhu、Jinming Wang、Wei Wei、Hua Wang
DOI:10.1021/acs.joc.7b00994
日期:2017.7.7
A facile I2O5-mediated direct oxidative coupling of aromatic alkenes with thiols toward vinyl sulfones has been developed under metal-free conditions. This methodology provides a convenient and efficient approach to various (E)-vinyl sulfones from readily available starting materials with excellent regioselectivity. The present oxidative coupling reaction, not only expands the scope of functionalization
在无金属条件下,已经开发出一种简便的由I 2 O 5介导的芳香族烯烃与硫醇向乙烯基砜的直接氧化偶合的方法。该方法学提供了一种简便有效的方法,可从易于获得的起始材料中以优异的区域选择性来制备各种(E)-乙烯基砜。目前的氧化偶合反应不仅扩大了烯烃与硫醇的官能化范围,而且使其成为对(E)-乙烯基砜的传统合成方法的实用而有力的补充。
Cu-Catalyzed Dehydrogenative Olefinsulfonation of Alkyl Arenes
A copper-catalyzedreaction protocol for the dehydrogenation of ethylbenzenes into styrene derivatives has been developed. This reaction procedure proceeded well under mild reaction conditions, providing a practical and efficient strategy for the rapid assembly of biologically and pharmaceutically significant molecules, such as vinyl sulfone. Simple alkyl arenes were functionalized via consecutive
已经开发出铜催化的用于将乙苯脱氢成苯乙烯衍生物的反应方案。该反应过程在温和的反应条件下进行得很好,为生物学和药学上重要的分子(如乙烯基砜)的快速组装提供了实用而有效的策略。在存在N-磺酰基苯并[ d ]咪唑的情况下,通过连续的β-消除作用将简单的烷基芳烃官能化,具有广泛的底物范围和良好的官能团耐受性。
Aerobic Copper-Catalyzed Synthesis of (<i>E</i>)-Vinyl Sulfones by Direct C–S Bond Oxidative Coupling
作者:Xiao Liang、Mingteng Xiong、Heping Zhu、Kexin Shen、Yuanjiang Pan
DOI:10.1021/acs.joc.9b01400
日期:2019.9.6
Copper-catalyzed aerobic oxidative C–Sbond coupling reaction between thiophenols and aryl-substituted alkenes for (E)-vinyl sulfones synthesis is reported here. With air utilized as a green oxidant, this transformation not only produces various vinyl sulfones in moderate to good yields but also possesses a simple and ecofriendly system. To clarify the mechanism, kinetic experiments has been investigated
Mechanochemical-assisted decarboxylative sulfonylation of α,β-unsaturated carboxylic acids with sodium sulfinate salts
作者:Barakha Saxena、Roshan I. Patel、Shruti Sharma、Anuj Sharma
DOI:10.1039/d3gc04954j
日期:——
Developing a green and efficient method for synthesizing vinyl sulfones is challenging and highly desirable. We herein report a green, sustainable, and unprecedented mechanochemical-assisted approach for the decarboxylative sulfonylation of α,β-unsaturatedcarboxylicacids with sodium sulfinates using only potassium iodide (50 mol%) as an activator under water-assisted grinding conditions. A library
Silicone-sulfone and silicone-fluorocarbon-sulfone gas permeable contact lenses and compositions thereof
申请人:PROGRESSIVE OPTICAL RESEARCH LTD.
公开号:EP0231572A2
公开(公告)日:1987-08-12
Highly oxygen permeable hard and semi-hard contact lenses are made from the copolymer of ethylenically unsaturated siloxane ester, ethylenically unsaturated fluorocarbon ester and ethylenically unsaturated sulfone monomer and methods for the polymerization thereof.