Direct and Efficient Synthesis of Sulfonium Acyl Sulfonylmethylide Ylides from Acetylenic Sulfones and Dimethyl Sulfoxide
作者:Jiaxi Xu、Duo Fu、Jiayi Wang
DOI:10.1055/a-1541-6271
日期:2021.11
sulfonium ylides – sulfonium acyl sulfonylmethylides – were directly and efficiently prepared from various acetylenic sulfones and aliphatic sulfoxides under heating conditions. The current method features short reaction time, low cost, readily available starting materials, convenient operation, and purification, providing an efficient access to widely applied bifunctionalized sulfonium ylides.
A new straightforward synthesis of alkynyl sulfones via the sonochemical coupling between alkynyl halides and copper sulfinates
作者:Hitomi Suzuki、Hajime Abe
DOI:10.1016/0040-4039(96)00649-1
日期:1996.5
Alkynyl aryl sulfones 2 were easily obtained in moderate to good yields by treating alkynyl iodides 1 with copper arenesulfinates in a tetrahydrofuran suspension under ultrasonic irradiation.
Gold‐Catalyzed Oxygen Transfer to Alkynylsulfones: A Diazo‐Free Route to 4‐Sulfonyl‐1,3‐Oxazoles
作者:Elena I. Chikunova、Dmitry V. Dar'in、Vadim Yu. Kukushkin、Alexey Yu. Dubovtsev
DOI:10.1002/adsc.202200751
日期:2022.11.8
The gold-catalyzed annulation of alkynylsulfones, involving pyridine N-oxides (as O-atom transfer reagents) and nitriles (as C=N synthons), comprises a diazo-free route to valuable 4-sulfonyl-1,3-oxazoles. This reaction operates under relatively mild conditions (IPrAuNTf2 5 mol %, rt or 60 °C), and a number of functionalities was compatible (35 examples; 14–95%). In most cases, the SO2 fragment, which
炔基砜的金催化环化,包括吡啶N-氧化物(作为O原子转移试剂)和腈(作为 C=N 合成子),包括生成有价值的 4-磺酰基-1,3-恶唑的无重氮途径。该反应在相对温和的条件下进行(IPrAuNTf 2 5 mol%,rt 或 60 °C),并且许多功能是兼容的(35 个示例;14-95%)。在大多数情况下,通常在先前报道的 Au 催化的O转移到炔基砜中排出的 SO 2片段保留在杂环产物中。假定的反应机制表明通过O原子转移形成的反应性金 α-氧代卡宾中间体的关键作用。
Non-Friedländer Route to Diversely 3-Substituted Quinolines through Au(III)-Catalyzed Annulation Involving Electron-Deficient Alkynes
作者:Elena I. Chikunova、Vadim Yu. Kukushkin、Alexey Yu. Dubovtsev
DOI:10.1021/acs.orglett.3c03775
日期:2023.12.8
alkynylphosphonates, propiolonitriles, and trifluoromethylated alkynes can be used as the starting materials for the preparation of quinolines diversely substituted at position 3. On the basis of experimental data, we proposed a reaction mechanism in which gold(III) functions as a strong electrophilic activator of the C≡C bond and the carbonyl group. The synthetic potential of the presented method is additionally
Direct cross-coupling of aryl alkynyliodines with arylsulfinic acids leading to alkynyl sulfones under catalyst-free conditions
作者:Leilei Wang、Wei Wei、Daoshan Yang、Huanhuan Cui、Huilan Yue、Hua Wang
DOI:10.1016/j.tetlet.2017.11.029
日期:2017.12
A facile and efficient one-pot method has been developed for the construction of alkynyl sulfones via direct cross-coupling reaction of aryl alkynyliodines and arylsulfinic acids. The present transformation could be accomplished under catalyst- and additive-free conditions, providing a series of alkynyl sulfones in moderate to good yields with favorable functional group tolerance. (C) 2017 Elsevier Ltd. All rights reserved.