Rhodium- and Palladium-Catalyzed Hydroarylation of Propargylic Amines with Arylboronic Acids
作者:Antonio Arcadi、Massimiliano Aschi、Marco Chiarini、Giovanni Ferrara、Fabio Marinelli
DOI:10.1002/adsc.200900773
日期:2010.2.15
The hydroarylation of 3-arylprop-2-yn-1-amine derivatives with arylboronic acids has been studied in the presence of rhodium or palladium catalysts. By using a rhodium-based catalytic system, β,γ-diarylallylamines were isolated in good yields. By contrast, the formation of the regiosomeric γ,γ-diarylallylamines was achieved by means of a palladium catalyst in the presence of acetic acid. The complementary
已经在铑或钯催化剂的存在下研究了3-芳基丙-2-yn-1-胺衍生物与芳基硼酸的氢芳基化。通过使用铑基催化系统,可以高收率分离出β,γ-二芳基烯丙基胺。相反,在乙酸存在下,通过钯催化剂实现了区域二体性γ,γ-二芳基烯丙基胺的形成。这两个过程显示出的互补区域选择性是不同催化循环的结果,这些催化循环分别涉及配位炔烃的碳硼化或加氢钯化作为关键步骤。计算出的π复合物中的电荷分布与所获得的结果一致。