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。
Facile Preparation of Aryl Sulfides Using Palladium Catalysis under Mild Conditions
作者:Tatsuo Okauchi、Kouji Kuramoto、Mitsuru Kitamura
DOI:10.1055/s-0030-1259012
日期:2010.12
A convenient method for C-S cross-coupling of aryl bromides with various thiols has been developed that involves the use of a 1,1'-bis(diphenylphosphino)ferrocene (DPPF)-ligated palladium complex with N,N-diisopropylethylamine (DIPEA) as the base. This coupling is tolerant of a wide range of functional groups, including hydroxy, amino, cyano, nitro, formyl, and carboxyl groups.
[EN] CATALYSTS FOR ARYL SULFIDE SYNTHESIS AND METHOD OF PRODUCING ARYL SULFIDES<br/>[FR] CATALYSEURS DESTINES A UNE SYNTHESE DE SULFURE D'ARYLE ET PROCEDE DE FABRICATION DE SULFURES D'ARYLE
申请人:UNIV YALE
公开号:WO2007064869A2
公开(公告)日:2007-06-07
[EN] The present invention relates to the formation of aryl sulfides and aryl thiols from aryl halides and thiols, thiolates or thiolate equivalents. The present invention provides a catalyst for the coupling of aryl halides with alkyl or aryl thiols or a hydrogen sulfide equivalent to form aryl alkyl, aryl silyl or diaryl sulfides. The reaction encompasses bromoarenes and other similar compounds containing leaving groups as well as nitrile, ester, keto, free hydroxyl, free amino, free carboxylic acid and other common functionalities. The invention can be used to prepare pharmaceutical compounds, especially including their intermediates, agricultural agents and aryl sulfide polymers. [FR] La présente invention concerne la formation de sulfures d'aryle et d'arylthiols à partir d'halogénures d'aryles et de thiols, de thiolates ou d'équivalents de thiolate. La présente invention concerne un catalyseur destiné à coupler des halogénures d'aryle avec des alkylthiols ou des arylthiols ou un sulfure d'hydrogène équivalent en vue de former des alkylarylsulfures, des arylsilylsulfures ou des sulfures de diaryle. La réaction englobe des bromoarènes et d'autres composés similaires contenant des groupes partants ainsi que du nitrile, de l'ester, de la cétone, un groupe hydroxyle libre, un groupe amino libre, un acide carboxylique libre et d'autres fonctionnalités courantes. La présente invention peut être utilisée en vue de préparer des composés pharmaceutiques, incluant notamment leurs intermédiaires, des agents agricoles et polymères de sulfure d'aryle.