By employing reusable nanocobalt oxides as the catalysts, a site-specific oxidative C–H chalcogenation of (hetero)aryl-fused cyclicamines with various thiols and diselenides is presented for the first time. The reaction proceeds selectively at the sites of the (hetero)aryl rings para to the N atom, and enables access to a wide array of chalcogenyl N-heteroarenes. The merits of the transformation involve
通过使用可重复使用的纳米钴氧化物作为催化剂,首次提出了(杂)芳基稠合的环状胺与各种硫醇和二硒化物的位点特异性氧化C–H硫属元素化。该反应在(杂)芳环的位点选择性地进行对位的N原子,并且使得获得了广泛阵列chalcogenyl的N-杂芳烃的。该转化的优点包括高的步长和原子效率,优异的底物和功能相容性,操作简便性以及使用自然丰富的Co / O 2系统。目前的工作为从容易获得的原料中选择性合成功能性N-杂芳烃提供了基础。
A New Family of Nucleophiles for Photoinduced, Copper-Catalyzed Cross-Couplings via Single-Electron Transfer: Reactions of Thiols with Aryl Halides Under Mild Conditions (O °C)
作者:Christopher Uyeda、Yichen Tan、Gregory C. Fu、Jonas C. Peters
DOI:10.1021/ja404050f
日期:2013.6.26
for a wide range of coupling partners. As far as we are aware, copper-catalyzed C-S cross-couplings at 0 °C have not previously been achieved, which renders our observation of efficient reaction of an unactivated aryl iodide at -40 °C especially striking. Mechanistic investigations are consistent with these photoinduced C-S cross-couplings following a SET/radical pathway for C-X bond cleavage (via a
A General Palladium-Catalyzed Coupling of Aryl Bromides/Triflates and Thiols
作者:Takahiro Itoh、Toshiaki Mase
DOI:10.1021/ol047996t
日期:2004.11.1
We have developed an efficient palladium-catalyzed carbon-sulfur bond formation reaction of arylbromides, triflates, and activated aryl chloride. Using this protocol, we have shown tolerance to a wide variety of aryl thiols and alkyl thiols that can also be used as sulfide equivalents. [reaction: see text]
[EN] METHOD FOR PRODUCING THIOETHER COMPOUND<br/>[FR] MÉTHODE DE SYNTHÈSE D'UN COMPOSÉ DE TYPE THIOÉTHER
申请人:BANYU PHARMA CO LTD
公开号:WO2006038741A1
公开(公告)日:2006-04-13
Disclosed is an efficient and widely-applicable method for commercially producing a thioether compound or a thiol compound which is useful as a pharmaceutical product or a production intermediate of a pharmaceutical product. Specifically disclosed is a method for producing a thioether compound represented by the general formula [I] below or a salt thereof. This method is characterized in that a compound represented by the following general formula [III]: [III] (wherein X represents a bromine atom, a chlorine atom or a trifluoromethylsulfonyloxy group, and ring A represents an aryl group or a heteroaryl ring group) or a salt thereof is reacted with a thiol compound represented by the following general formula [II]: [II] or a salt thereof in the presence of a palladium compound such as Pd2(dba)3, a base such as i-Pr2NEt and a phosphorus compound represented by the following formula [AA].
Disclosed is an efficient and widely-applicable method for commercially producing a thioether compound or a thiol compound which is useful as a pharmaceutical compound or a production intermediate of it. Specifically disclosed is a method for producing a thioether compound represented by the general formula [I] below or a salt thereof. This method is characterized in that a compound represented by the following general formula [III]:[III] (wherein X represents a bromine atom, a chlorine atom or a trifluoromethylsulfonyloxy group, and ring A represents an aryl group or a heteroaryl ring group) or a salt thereof is reacted with a thiol compound represented by the following general formula [II]:[II] or a salt thereof in the presence of a palladium compound such as Pd
2
(dba)
3
, a base such as i-Pr
2
NEt and a phosphorus compound represented by the following formula [AA].