single‐step synthesis of aryl thiols from arylhalides has been developed employing copper(II) catalyst and 1,2‐ethanedithiol. The key features are use of readily available reagents, a simple operation, and relatively mild reaction conditions. This new protocol shows a broad substrate scope with excellent functional group compatibility. A variety of aryl thiols are directly prepared from arylhalides in high
Palladium-Catalyzed C–S Coupling: Access to Thioethers, Benzo[<i>b</i>]thiophenes, and Thieno[3,2-<i>b</i>]thiophenes
作者:Marius Kuhn、Florian C. Falk、Jan Paradies
DOI:10.1021/ol2016093
日期:2011.8.5
formation/cross-coupling/cyclization domino reaction using thiourea as a cheap and easy to handle dihydrosulfide surrogate has been developed. Structurally important biarylthioether, benzo[b]thiophenes, and thieno[3,2-b]thiophene scaffolds are provided in high yield.
已经开发出了第一个使用硫脲作为便宜且易于处理的二氢硫代用品的C-S键形成/交叉偶联/环化多米诺反应。以高收率提供结构上重要的联芳基硫醚,苯并[ b ]噻吩和噻吩并[3,2- b ]噻吩支架。
General Method for Functionalized Polyaryl Synthesis via Aryne Intermediates
作者:Thanh Truong、Milad Mesgar、Ky Khac Anh Le、Olafs Daugulis
DOI:10.1021/ja504886x
日期:2014.6.18
complements transition-metal-catalyzed direct arylation and allows access to structures that are not easily accessible via other direct arylation methods. The reactions are highly functional-group tolerant, with alkene, ether, dimethylamino, trifluoromethyl, ester, cyano, halide, hydroxyl, and silyl functionalities compatible with reaction conditions.
Rh(III)-Catalyzed Decarboxylative <i>ortho</i>-Heteroarylation of Aromatic Carboxylic Acids by Using the Carboxylic Acid as a Traceless Directing Group
作者:Xurong Qin、Denan Sun、Qiulin You、Yangyang Cheng、Jingbo Lan、Jingsong You
DOI:10.1021/acs.orglett.5b00532
日期:2015.4.3
ortho-heteroarylation of aromatic carboxylicacids with various heteroarenes has been developed through Rh(III)-catalyzed two-fold C–H activation, which exhibits a wide substrate scope of both aromatic carboxylicacids and heteroarenes. The use of naturally occurring carboxylicacid as the directinggroup avoids troublesome extra steps for installation and removal of an external directinggroup.
Efficient Synthesis of Benzothiophenes by an Unusual Palladium-Catalyzed Vinylic CS Coupling
作者:Christopher S. Bryan、Julia A. Braunger、Mark Lautens
DOI:10.1002/anie.200902843
日期:2009.9.7
construction of a CS and a CC bond under catalytic conditions forms the basis of an efficient route to diversely functionalized benzothiophenes from gem‐dihalovinyl thiophenols. The CC bond can be formed in this tandem catalytic process with an organoboron reagent as shown in the scheme (R1=H, Me, F, Cl, Br, OCH2O; R2=H, Me; R3=aryl, heteroaryl, alkenyl, alkyl), or by Heck or Sonogashira coupling with an
同时施工一个C S和一个C 催化条件下C键形成从不同地官能化的苯并噻吩的高效路由的基础宝石-dihalovinyl苯硫酚。与c 可以在此串联与有机硼试剂催化工艺来形成C键为显示在方案(R 1 = H中,Me,F,氯,溴, OCH 2 ö ; R 2 = H中,Me; R 3=芳基,杂芳基,烯基,烷基),或通过Heck或Sonogashira与烯烃或炔烃偶联。