Nanosized CdS as a Reusable Photocatalyst: The Study of Different Reaction Pathways between Tertiary Amines and Aryl Sulfonyl Chlorides through Visible-Light-Induced N-Dealkylation and C–H Activation Processes
作者:Somayeh Firoozi、Mona Hosseini-Sarvari
DOI:10.1021/acs.joc.0c02263
日期:2021.2.5
It has been found that the final products of the reaction of sulfonyl chlorides and tertiary amines in the presence of cadmium sulfide nanoparticles under visible light irradiation are highly dependent on the applied reaction conditions. Interestingly, with the change of a reaction condition, different pathways were conducted (visible-light-induced N-dealkylation or sp3 and sp2 C–H activation) that
Cross-Coupling of Sodium Sulfinates with Aryl, Heteroaryl, and Vinyl Halides by Nickel/Photoredox Dual Catalysis
作者:Huifeng Yue、Chen Zhu、Magnus Rueping
DOI:10.1002/anie.201711104
日期:2018.1.26
catalyzed sulfonylation reaction of aryl, heteroaryl, and vinylhalides has been achieved for the first time. This newly developed sulfonylation protocol provides a versatile method for the synthesis of diverse aromatic sulfones at room temperature and shows excellent functional group tolerance. The electrophilic coupling partners are not limited to aryl, heteroaryl, and vinyl bromides and iodides, but also
Highly selective catalytic Friedel–Crafts acylation and sulfonylation of activated aromatic compounds using indium metal
作者:Doo Ok Jang、Kyung Soo Moon、Dae Hyan Cho、Joong-Gon Kim
DOI:10.1016/j.tetlet.2006.06.099
日期:2006.8
Friedel–Crafts acylation of activated benzenes with various aromatic and aliphatic acid chlorides was studied in the presence of indium metal. The reaction was accomplished in high isolated yields under solvent or solvent-less conditions. The method is also applicable for preparing diaryl sulfones from aromatic compounds and aryl sulfonylchlorides.
Using a simple copper(I) catalyst has allowed a high yielding sulfonylative-Suzuki–Miyaura cross-coupling reaction to be developed. The process provides a single step route to diaryl sulfones from the direct combination of aryl boronic acids, sulfur dioxide and aryl iodides, and represents the first sulfonylative variant of a classic cross-coupling reaction. Sulfur dioxide is delivered from the surrogate
The direct synthesis of diaryl sulfones from aryl silanes, SO2 surrogate, and aryl iodides is performed thanks to an air-stable Cu(I)-catalyzed sulfonylative Hiyama cross-coupling. Experimental and theoretical studies support a Cu(I)/Cu(III)-based mechanism with fast insertion of the small molecule into the Cu−C bond of a copper-aryl intermediate.