Herein, we report a catalyst system for Pd-catalyzed decarbonylative Suzuki–Miyauracross-coupling of aroyl chlorides with boronic acids to furnish biaryls. This strategy is suitable for a broad range of common aroyl chlorides and boronic acids. The synthetic utility is highlighted in the direct late-stage functionalization of pharmaceuticals and natural products capitalizing on the presence of carboxylic
Palladium Membrane-Installed Microchannel Devices for Instantaneous Suzuki-Miyaura Cross-Coupling
作者:Yoichi M. A. Yamada、Toshihiro Watanabe、Tomohiko Beppu、Naoshi Fukuyama、Kaoru Torii、Yasuhiro Uozumi
DOI:10.1002/chem.201000511
日期:——
Instantaneous catalytic carbon–carbon bond‐forming reactions were achieved in catalytic membrane‐installed microchanneldevices that have a polymeric palladium‐complex membrane. The catalytic membrane‐installed microchanneldevices were provided inside the microchannels by means of coordinative and ionic molecular convolution at the interface between the organic and aqueous phases flowing laminarly
Regioselective Halogenation of Arenes and Heterocycles in Hexafluoroisopropanol
作者:Ren-Jin Tang、Thierry Milcent、Benoit Crousse
DOI:10.1021/acs.joc.7b02920
日期:2018.1.19
halogenation of arenes and heterocycles with N-halosuccinimides in fluorinated alcohols is disclosed. Under mild condition reactions, a wide diversity of halogenated arenes are obtained in good yields with high regioselectivity. Additionally, the versatility of the method is demonstrated by the development of one-pot sequential halogenation and halogenation-Suzuki cross-couplingreactions.
A Highly Active Cobalt Catalyst System for Kumada Biaryl Cross-Coupling
作者:Wenqin Wu、Hung Duong
DOI:10.1055/s-0037-1609337
日期:2018.6
A highlyactivecobaltcatalyst system has been developed for the cross-coupling reactions of arylmagnesium reagents and aryl bromides. In the presence of 1 mol% CoCl2, 2 mol% IPr·HCl and 2 mol% NaO t Bu, a wide range of (hetero)biaryls are prepared in 51–99% yields at room temperature within a short reaction time.
高活性钴催化剂体系已被开发用于芳基镁试剂和芳基溴化物的交叉偶联反应。在 1 mol% CoCl2、2 mol% IPr·HCl 和 2 mol% NaO t Bu 的存在下,在室温下短时间内反应时间可以以 51-99% 的产率制备多种(杂)联芳基化合物。
General and highly efficient fluorinated-N-heterocyclic carbene–based catalysts for the palladium-catalyzed Suzuki–Miyaura reaction
作者:Taoping Liu、Xiaoming Zhao、Qilong Shen、Long Lu
DOI:10.1016/j.tet.2012.05.068
日期:2012.8
acid with aryl halides and heteroarylhalides, but also efficient for coupling of other heteroarylhalides and heteroaryl boronic acids. Finally, the catalyst is highly effective for Suzuki–Miyaura reaction of aryl bromides and chlorides with 0.01–0.1 mol % loading if the temperature was raised at refluxed THF/H2O.
据报道,一种通用且高效的三氟甲基化-N-杂环卡宾(NHC)基催化剂可用于钯催化的Suzuki-Miyaura反应。在催化剂的存在下,未活化的芳基氯和三氟甲磺酸与芳基硼酸的反应在室温下发生,收率好至极好(63-98%)。此外,由Pd(OAc)2 /咪唑鎓盐6a的组合产生的催化剂不仅对于杂芳基硼酸与芳基卤化物和杂芳基卤化物的偶联有效,而且对其他杂芳基卤化物和杂芳基硼酸的偶联有效。最后,如果温度在回流的THF / H 2 O上升高,则该催化剂对于0.01-0.1 mol%负载量的芳基溴化物和氯化物的Suzuki-Miyaura反应非常有效。