Direct C-S bond coupling is an attractive way to construct aryl sulfur ether, a building block for a variety of biological active molecules. Herein, we disclose an effective model for regioselective thiolation of the aromatic C-Hbond by thiolactivation instead of arene activation. Strikingly, this method has been applied into anisole derivatives that are not available in the arene activation approach
Coupling of thiols and aromatic halides promoted by diboron derived super electron donors
作者:Mario Franco、Emily L. Vargas、Mariola Tortosa、M. Belén Cid
DOI:10.1039/d1cc05294b
日期:——
We have proven that pyridine–boryl complexes can be used as superelectron donors to promote the coupling of thiols and aromatic halides through a SRN1 mechanism. The reaction is efficient for a broad substrate scope, tolerating heterocycles including pyridines, enolizable or reducible functional groups. The method has been applied to intermediates in drug synthesis as well as interesting functionalized
我们已经证明,吡啶-硼基复合物可用作超电子供体,通过 S RN 1 机制促进硫醇和芳族卤化物的偶联。该反应适用于广泛的底物范围,可耐受杂环,包括吡啶、可烯醇化或可还原的官能团。该方法已通过受控和连续的分子内电子转移过程应用于药物合成中的中间体以及有趣的功能化聚硫醚。
CuI‐catalyzed direct synthesis of diaryl thioethers from aryl boronic acids and arylsulfonyl chlorides
作者:Keke Huang、Min Yang、Xiao‐Jing Lai、Xin Hu、Guanyinsheng Qiu、Jin‐Biao Liu
DOI:10.1002/aoc.5385
日期:2020.2
A CuI‐catalyzed direct coupling of arylboronicacids with arylsulfonyl chlorides for the preparation of diaryl thioethers was developed. The reaction is initiated by a PPh3 reduction of the arylsulfonyl chloride, followed by a CuI‐catalyzed C–S coupling with an arylboronicacid. Various arylsulfonyl chlorides can directly serve as a sulfur source in this mild and efficient reaction giving the desired
One-Pot Synthesis of Symmetrical and Unsymmetrical Aryl Sulfides by Pd-Catalyzed Couplings of Aryl Halides and Thioacetates
作者:Namjin Park、Kyungho Park、Mihee Jang、Sunwoo Lee
DOI:10.1021/jo2007253
日期:2011.6.3
Aryl sulfides were obtained from the coupling reaction of S-aryl (or S-alkyl) thioacetates and aryl bromides in the presence of palladium catalyst. This reaction method enables the one-pot synthesis of symmetrical and unsymmetrical diaryl sulfides by employing potassium thioacetate with aryl iodides and aryl bromides.