通过过渡金属催化或 S N Ar 反应制备S -芳基黄原酸酯因其在所用条件下的进一步转化而变得复杂。相比之下,O-烷基黄原酸钾与二芳基碘盐的 S-芳基化反应在温和条件下进行,从而能够获得取代的S-芳基黄原酸。该方法表现出良好的官能团耐受性,可应用于药物分子的后期C-H功能化。由此产生的S -芳基黄原酸酯的不同转化提供了快速获得一系列与药物化学相关的有机硫化合物的途径。
Photoinduced Copper-Catalyzed Late-Stage Azidoarylation of Alkenes via Arylthianthrenium Salts
作者:Yuan Cai、Sagnik Chatterjee、Tobias Ritter
DOI:10.1021/jacs.3c04016
日期:2023.6.28
nervous system. Herein, we present a photoinduced copper-catalyzed azidoarylation of alkenes at a late stage with arylthianthrenium salts, allowing access to highly functionalized acyclic (hetero)arylethylamine scaffolds that are otherwise difficult to access. A mechanistic study is consistent with a rac-BINAP-CuI-azide (2) as the photoactive catalytic species. We show the utility of the new method
Electron Donor‐Acceptor Complex Initiated Photochemical Phosphorus Arylation with Diaryliodonium Salts toward the Synthesis of Phosphine Oxides
作者:Dmitry I. Bugaenko、Alexander V. Karchava
DOI:10.1002/adsc.202300351
日期:2023.6.13
blue light irradiation followed by oxidative P−N bond cleavage in the in situ generated amino phosphonium salts under hydrolytic conditions represent a method for the synthesis of substituted arylphosphine oxides, arylphosphinic and arylphosphonic amides respectively. The proposed approach is based on using visible light as the only promoter for the C−Pbondformation, accommodates a variety of functional
Synthesis of Sulfur-Containing Trisubstituted Imidazoles by One-Pot, Multicomponent Reaction via Electron Donor–Acceptor Complex Photoactivation
作者:Junze Zuo、Xufeng Li、Yongjia Shi、Jian Lv、Daoshan Yang
DOI:10.1021/acs.orglett.4c00932
日期:——
reaction of isothiocyanates, isocyanides, and thianthrenium salt-functionalized arenes is presented, which affords a facile approach to sulfur-containing trisubstitutedimidazoles in good yields with a broad substrate scope and excellent functional group tolerance. The byproduct thianthrene is recovered in quantity, thereby ultimately reducing the production of chemical waste. The developed methodology
A denitrative cyanation of nitroarenes using organocyanides and a palladium catalyst was developed. The key for this reaction was the utilization of an aminoacetonitrile as a cyano source to avoid the generation of stoichiometric metal- and halogen-containing chemical waste. A wide range of nitroarenes, including heteroarenes and pharmaceutical molecules, can be converted into aryl nitriles.
作者:Bugaenko, Dmitry I.、Tikhanova, Olga A.、Andreychev, Valeriy V.、Karchava, Alexander V.
DOI:10.1021/acs.joc.4c00768
日期:——
the synthesis of α-amino acids via C-alkylation under basic conditions followed by hydrolysis/decarboxylation. In contrast, the C-arylation of this reagent remains undeveloped. Herein, we report a novel strategy for the synthesis of racemic α-arylglycines based on the selective arylation of DEAM with diaryliodonium salts under mild, transition metal-free conditions. The reaction features good functional