CuI/Oxalic Diamide-Catalyzed Cross-Coupling of Thiols with Aryl Bromides and Chlorides
作者:Chia-Wei Chen、Yi-Ling Chen、Daggula Mallikarjuna Reddy、Kai Du、Chao-En Li、Bo-Hao Shih、Yung-Jing Xue、Chin-Fa Lee
DOI:10.1002/chem.201701671
日期:2017.7.26
We report a general copper‐catalyzed cross‐coupling of thiols with arylhalides by using N‐aryl‐N′‐alkyl oxalic diamide (L3) or N,N′‐dialkyl oxalic diamide (L5) as the ligand. Both aryl and alkyl thiols can be coupled with unactivated aryl bromides and chlorides to give the desired products in good yields. Furthermore, this system features a broad substrate scope and good tolerance of functional groups
我们通过使用报告与芳基卤硫醇的一般铜-催化的交叉偶联ñ -芳基- N' -烷基草酸二酰胺(L3)或ñ,N' -二烷基二酰胺草酸(L5)作为配体。芳基和烷基硫醇都可以与未活化的芳基溴化物和氯化物偶合,以高收率得到所需的产物。此外,该系统具有广泛的底物范围和对官能团的良好耐受性。重要的是,草酸二酰胺是稳定的,并且可以容易地由市售和廉价的起始原料制备。
Rhodium-Catalyzed Reductive Coupling of Disulfides and Diselenides with Alkyl Halides, Using Hydrogen as a Reducing Agent
作者:Kaori Ajiki、Masao Hirano、Ken Tanaka
DOI:10.1021/ol051588n
日期:2005.9.1
[reaction: see text] We have established that RhCl(PPh3)3 catalyzes a reductive coupling of disulfides and diselenides with alkyl halides in the presence of triethylamine using hydrogen as a reducing agent. This reaction serves as a convenient new method to produce unsymmetrical sulfides and selenides from disulfides and diselenides instead of unstable and odoriferous thiols and selenols.
Ni-catalyzed C–S bond cleavage of aryl 2-pyridyl thioethers coupling with alkyl and aryl thiols
作者:Cheng-Yi Wang、Rui Tian、Yong-Ming Zhu
DOI:10.1016/j.tet.2021.132453
日期:2021.10
A nickel-catalyzed C–SPy bond activation reactions to produce a variety of thioethers has been developed. The reaction is promoted by a user-friendly, inexpensive, air and moisture-stable Ni precatalyst. Various aryl 2-pyridyl thioethers and a wide range of alkyl and aryl thiols substrates were tolerated in this process which afforded products in moderate to excellent yields.
Reductive Coupling of Disulfides and Diselenides with Alkyl Halides Catalysed by a Silica-Supported Phosphine Rhodium Complex using Hydrogen as a Reducing Agent
作者:Hean Zhang、Mangen Hu、Mingzhong Cai
DOI:10.3184/174751913x13796950361813
日期:2013.10
The reductive coupling of disulfides and diselenides with alkyl halides was achieved in THF at 65 °C in the presence of 3 mol% of a silica-supported phosphine rhodium complex and triethylamine using hydrogen as a reducing agent, affording a variety of unsymmetrical sulfides and selenides in high yields. The heterogeneous rhodium catalyst can be recovered by a simple filtration and reused several times
在 3 mol% 二氧化硅负载的膦铑配合物和三乙胺存在下,使用氢气作为还原剂,在 65 °C 的 THF 中实现二硫化物和二硒化物与烷基卤化物的还原偶联,得到各种不对称的硫化物和硒化物高产。多相铑催化剂可以通过简单的过滤回收并重复使用多次而不会显着损失活性。还观察到与酰卤的反应。
Nickel-Catalyzed Cross-Coupling Reactions of Alkyl Aryl Sulfides and Alkenyl Alkyl Sulfides with Alkyl Grignard Reagents Using (<i>Z</i>)-3,3-Dimethyl-1,2-bis(diphenylphosphino)but-1-ene as Ligand
A combination of nickel(II) acetylacetonate and (Z)-3,3-dimethyl-1,2-bis(diphenylphosphino)but-1-ene catalyzes cross-couplingreactions of alkyl aryl sulfides and alkenyl alkyl sulfides with alkyl Grignardreagents. Not only primary but also secondary alkyl Grignardreagents can be employed.
乙酰丙酮镍 (II) 和 (Z)-3,3-dimethyl-1,2-bis(diphenylphosphino)but-1-ene 的组合催化烷基芳基硫化物和烯基烷基硫化物与烷基格氏试剂的交叉偶联反应。不仅可以使用伯烷基格氏试剂而且可以使用仲烷基格氏试剂。