N-Heterocyclic Carbene Derived Nickel-Pincer Complexes: Efficient and Applicable Catalysts for Suzuki-Miyaura Coupling Reactions of Aryl/Alkenyl Tosylates and Mesylates
作者:Jun-ichi Kuroda、Kiyofumi Inamoto、Kou Hiroya、Takayuki Doi
DOI:10.1002/ejoc.200900067
日期:2009.5
activities of NHC-derived nickel–pincer complexes for the Suzuki–Miyaura coupling reactions of aryl/alkenyl tosylates and mesylates are described. In the presence of a catalytic amount of nickelacycle 1a, a wide array of tosylates and mesylates reacted with several aryl- and alkenylboronic acids to afford the coupling products, generally in high yields. Fine tuning of the reaction conditions for each class
描述了 NHC 衍生的镍钳配合物对芳基/烯基甲苯磺酸酯和甲磺酸酯的 Suzuki-Miyaura 偶联反应的催化活性。在催化量的镍环 1a 存在下,多种甲苯磺酸盐和甲磺酸盐与几种芳基硼酸和烯基硼酸反应得到偶联产物,通常产率很高。只有通过选择合适的反应介质(甲苯磺酸盐为 DME,甲磺酸盐为二恶烷),才能对每类亲电子试剂的反应条件进行微调。(© Wiley-VCH Verlag GmbH & Co. KGaA,69451 Weinheim,德国,2009)