Room temperature nickel-catalyzed cross-coupling of aryl-boronic acids with thiophenols: synthesis of diarylsulfides
作者:Amit Bhowmik、Mahesh Yadav、Rodney A. Fernandes
DOI:10.1039/d0ob00244e
日期:——
been developed for the synthesis of symmetric and unsymmetric diarylsulfides at room temperature and in air. This methodology is reliable and offers a mild and easy to operate process for the synthesis of arylthioethers, which are essential compounds with applications in the pharmaceutical and agricultural industries. This method avoids the use of expensive transitionmetals, such as Pd, Ir or Rh,
Room-Temperature CuI-Catalyzed Amination of Aryl Iodides and Aryl Bromides
作者:Xiaomei Ding、Manna Huang、Zhou Yi、Dongchen Du、Xinhai Zhu、Yiqian Wan
DOI:10.1021/acs.joc.7b00290
日期:2017.5.19
general and effective CuI/N′,N′-diaryl-1H-pyrrole-2-carbohydrazide catalyst system was developed for the amination of aryliodides and bromides at room temperature with good chemoselectivity between −OH and −NH2 groups. Only 5 mol % of CuI and ligands was needed in this protocol to effect the amination of various arylbromides and aryliodides with a wide range of aliphatic and aryl amines (1.3 equiv)
Iron-Catalyzed S-Arylation of Benzothiazole with Aryl Iodides under Aqueous Medium: Facile Synthesis of Aryl(2-aminoaryl) Sulfides
作者:Ka Yung、Fuk Kwong、Hang Lee
DOI:10.1055/s-0034-1379484
日期:——
A simple route for facile access of aryl(2-aminoaryl) sulfide was reported. With the aid of iron(III) chloride catalyst and diamine ligand, benzothiazole was efficiently S-arylated with various aryliodides (19 examples) in water under air atmosphere. This operationally simple protocol provides aryl(2-aminoaryl) sulfides in moderate to good yields.
Copper-Catalyzed Domino Reactions for the Synthesis of Phenothiazines
作者:Manna Huang、Dongting Huang、Xinhai Zhu、Yiqian Wan
DOI:10.1002/ejoc.201500667
日期:2015.8
A method for the one-pot synthesis of phenothiazines from benzothiazoles and aryl ortho-dihalides was explored. Preliminary work on the mechanism of the reaction suggested that it follows a domino process, including the hydrolysis of benzothiazoles followed by C–S coupling and C–N coupling. The low loading of the catalyst system (5 mol-% for both copper and ligand), the mild experimental conditions
Synthesis of Diverse Phenothiazines by Direct Thioamination of Arynes with <i>S</i>-(<i>o</i>-Bromoaryl)-<i>S</i>-methylsulfilimines and Subsequent Intramolecular Buchwald–Hartwig Amination
A facile method for the synthesis of diverse phenothiazines has been achieved by direct thioamination of aryne intermediates with S-(o-bromoaryl)-S-methylsulfilimines and subsequent intramolecular ...