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。
Silver-mediated oxidative C–C bond sulfonylation/arylation of methylenecyclopropanes with sodium sulfinates: facile access to 3-sulfonyl-1,2-dihydronaphthalenes
sulfonylation/arylation of a C–C σ-bond in methylenecyclopropanes with sodium sulfinates to synthesize various 3-sulfonylated 1,2-dihydronaphthalenes is reported. This sulfonylation/arylation transformation proceeds via a sequence of sulfonylation, C–C σ-bond cleavage and intramolecular cyclization, and the experimental results show that the C–C σ-bond difunctionalization reaction includes a radical process. This
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。
Visible-Light-Catalyzed C–C Bond Difunctionalization of Methylenecyclopropanes with Sulfonyl Chlorides for the Synthesis of 3-Sulfonyl-1,2-dihydronaphthalenes
A novel visible-light-catalyzed sulfonylation/arylation of carbon–carbon σ-bond with sulfonyl chlorides for the synthesis of 3-sulfonylated 1,2-dihydronaphthalenes is developed. This difunctionalization proceeds via a sequence of C═C bond sulfonylation, C–C σ-bond cleavage, and intramolecular cyclization, and the experiment result shows that the C–C σ-bond difunctionalization reaction includes a radical
Visible Light-Mediated Metal-Free Synthesis of Vinyl Sulfones from Aryl Sulfinates
作者:Andreas Uwe Meyer、Stefanie Jäger、Durga Prasad Hari、Burkhard König
DOI:10.1002/adsc.201500142
日期:2015.6.15
Visiblelight and eosin Y catalyze the synthesis of vinyl sulfones from aryl sulfinates and alkenes by a photoredox process. The reaction scope is broad in aryl sulfinates and alkenes and the general and simple procedure provides a metal‐free alternative for the synthesis of synthetically valuable vinyl sulfones.
Visible-light induced oxidant-free oxidative cross-coupling for constructing allylic sulfones from olefins and sulfinic acids
作者:Guoting Zhang、Lingling Zhang、Hong Yi、Yi Luo、Xiaotian Qi、Chen-Ho Tung、Li-Zhu Wu、Aiwen Lei
DOI:10.1039/c6cc04109d
日期:——
An oxidant-free dehydrogenative sulfonylation of [small alpha]-methyl-styrene derivatives was developed for the construction of allylic sulfones by using eosin Y as a photosensitizer in conjunction with a cobaloxime catalyst. The process...