A General, Efficient, and Functional-Group-Tolerant Catalyst System for the Palladium-Catalyzed Thioetherification of Aryl Bromides and Iodides
作者:Manuel A. Fernández-Rodríguez、John F. Hartwig
DOI:10.1021/jo802594d
日期:2009.2.20
reaction of aryl bromides and iodides with aliphatic and aromatic thiols catalyzed by palladium complexes of the bisphosphine ligand CyPF-tBu (1) is reported. Reactions occur in excellent yields, broad scope, high tolerance of functional groups, and with turnover numbers that exceed those of previous catalysts by 2 or 3 orders of magnitude. These couplings of bromo- and iodoarenes are more efficient than
报道了由双膦配体 CyPF- t Bu ( 1 )的钯配合物催化的芳基溴化物和碘化物与脂肪族和芳香族硫醇的交叉偶联反应。反应以优异的产率、广泛的范围、高的官能团耐受性以及比以前催化剂高出 2 或 3 个数量级的周转数发生。这些溴代芳烃和碘代芳烃的偶联比氯芳烃的相应反应更有效,并且可以在较少的催化剂负载和/或更温和的反应条件下进行。因此,以前在芳基氯偶联中报道的范围和官能团耐受性的限制现在得到了克服。
Highly Efficient and Functional-Group-Tolerant Catalysts for the Palladium-Catalyzed Coupling of Aryl Chlorides with Thiols
作者:Manuel A. Fernández-Rodríguez、Qilong Shen、John F. Hartwig
DOI:10.1002/chem.200600949
日期:2006.10.16
The cross-coupling reaction of arylchlorides with aliphatic and aromatic thiols catalyzed by palladium complexes of the strongly binding bisphosphine CyPF-tBu ligand (1) is reported. Most of the reactions catalyzed by complexes of ligand 1 occur with turnover numbers that exceed those of previous catalysts by two orders of magnitude. The reactions occur with excellent yields, broad scope and high
an alkyl- lithium to 1-phenylthio-1-trimethylsilylethene (7), and transmetallation of a tributylstannyl moiety. The formation of an alkyl-lithium by reaction of lithium naphthalenide with a phenyl sulphide provided an additional route to (2) from bis(phenylthio)acetals (8). An alternative path to the α-phenylthiosilanes (2) was to reduce the corresponding α-phenylsulphonylsilane (15); these, in turn
Iron-catalyzed thioetherification of thiols with aryl iodides
作者:Jhih-Ru Wu、Che-Hung Lin、Chin-Fa Lee
DOI:10.1039/b907362k
日期:——
FeCl(3) in combination with bisphosphine ligands represents an efficient catalyst system for the cross-coupling of aryl- and alkyl thiols with aryliodides, a broad spectrum of functional groups can be tolerated during the catalysis.
Synthesis of Aryl Thioethers through the <i>N</i>-Chlorosuccinimide-Promoted Cross-Coupling Reaction of Thiols with Grignard Reagents
作者:Jun-Hao Cheng、Chintakunta Ramesh、Hsin-Lun Kao、Yu-Jen Wang、Chien-Ching Chan、Chin-Fa Lee
DOI:10.1021/jo302088t
日期:2012.11.16
approach for the synthesis of aryl sulfides through the coupling of thiols with Grignardreagents in the presence of N-chlorosuccinimide is described. The sulfenylchlorides were formed when thiols were treated with N-chlorosuccinimide, and the resulting sulfenylchlorides were then directly reacted with Grignardreagents to provide aryl sulfides in good to excellent yields under mild reaction conditions.