Radical–Radical Cross-Coupling for C–S Bond Formation
作者:Zhiliang Huang、Dongchao Zhang、Xiaotian Qi、Zhiyuan Yan、Mengfan Wang、Haiming Yan、Aiwen Lei
DOI:10.1021/acs.orglett.6b00764
日期:2016.5.20
A new method was demonstrated to overcome the selectivity issue of radical–radical cross-coupling toward the synthesis of asymmetric diaryl thioethers. The preliminary mechanism was revealed by radical-trapping experiments, DFT calculations, and kinetics, etc., indicating that the C–S bond formed through cross-coupling of a thiyl radical and an aryl radical cation. Moreover, the formation of an aryl
Synthesis of functionalized carbo- and heterocycles via gold-catalyzed cycloisomerization reactions of enynes
作者:Lucie Leseurre、Chung-Meng Chao、Tomohiro Seki、Emilie Genin、Patrick Y. Toullec、Jean-Pierre Genêt、Véronique Michelet
DOI:10.1016/j.tet.2008.11.105
日期:2009.2
conditions were compatible with various functional groups on the nucleophiles. Severe limitations were observed when the allylic position of the enyne is substituted by electron-withdrawing groups. The mechanism of the reaction was investigated via the synthesis of a deuterated aromatic ring: we showed that the source of proton involved in the protodemetallation step originates from the acidic activated
Efficient Continuous-Flow H–D Exchange Reaction of Aromatic Nuclei in D2O/2-PrOH Mixed Solvent in a Catalyst Cartridge Packed with Platinum on Carbon Beads
Herein, a continuous-flow deuteration methodology for various aromaticcompounds is developed based on heterogeneous platinum-catalyzed hydrogen-deuterium exchange. The reaction entailed the transf...
在此,基于多相铂催化氢-氘交换,开发了一种用于各种芳族化合物的连续流氘化方法。该反应需要转移...
Silver-catalyzed regioselective deuteration of (hetero)arenes and α-deuteration of 2-alkyl azaarenes
作者:Baobiao Dong、Xuefeng Cong、Na Hao
DOI:10.1039/d0ra02358b
日期:——
A simple silver-catalyzed regioselective deuteration of (hetero)arenes and α-deuteration of 2-alkyl azaarenes has been described. This strategy provides an efficient and practical avenue to access various deuterated electron-rich arenes, azaarenes and α-deuterated 2-alkyl azaarenes with good to excellent deuterium incorporation utilizing D2O as the source of deuterium atoms.
已经描述了(杂)芳烃的简单银催化区域选择性氘化和 2-烷基氮杂芳烃的 α-氘化。该策略为利用 D 2 O 作为氘原子源获得各种氘代富电子芳烃、氮杂芳烃和 α-氘代 2-烷基氮杂芳烃提供了一种有效且实用的途径,这些氘代具有良好的氘掺入能力。
Cu-Catalyzed Denitrogenative Ring-Opening of 3-Aminoindazoles for the Synthesis of Aromatic Nitrile-Containing (Hetero)Arenes
作者:Yao Zhou、Shuilin Deng、Shaoyu Mai、Qiuling Song
DOI:10.1021/acs.orglett.8b02629
日期:2018.10.5
example for denitrogenative ring-opening of 3-aminoindazoles. This novel reactivity of 3-aminoindazoles enables the production of diverse aromatic nitrile-containing (hetero)arenes via C–H arylation of (hetero)arenes with wide subsrate scope under mild conditions.