Hydrazone-Cu-Catalyzed Suzuki-Miyaura-Type Reactions of Dibromoalkenes with Arylboronic Acids
作者:Kohei Watanabe、Takashi Mino、Chikako Hatta、Eri Ishikawa、Yasushi Yoshida、Masami Sakamoto
DOI:10.1002/ejoc.201700535
日期:2017.7.7
reactions of dibromoalkenes with arylboronic acids using a hydrazone–Cu catalyst system proceeded smoothly under mild conditions to afford the corresponding internal alkyne derivatives in good yields. Furthermore, we also succeeded in the synthesis of o-allyloxy(ethynyl)benzene derivatives, which are known to be effective precursors of various heterocyclic compounds, through this reaction.
我们发现,使用a-铜催化剂体系,二溴烯烃与芳基硼酸的Suzuki-Miyaura型反应在温和的条件下可顺利进行,从而以高收率得到相应的内部炔烃衍生物。此外,我们还通过该反应成功合成了邻-烯丙氧基(乙炔基)苯衍生物,已知该衍生物是各种杂环化合物的有效前体。