Rhodium-catalyzed C(sp<sup>2</sup>)–H Addition of Arylboronic Acids to Alkynes Using a Boron-based, Convertible <i>ortho</i>-Directing Group
作者:Takeshi Yamamoto、Aoi Ishibashi、Michinori Suginome
DOI:10.1246/cl.170404
日期:2017.8.5
Temporary modification of a boronyl group with pyrazorylaniline allowed insertion of arylpropiolates and diphenylacetylenes into the o-C–H bond of arylboronic acids in the presence of rhodium catalysts, giving 3,3-diarylacrylates and triarylethene containing aryl groups bearing an o-boryl group stereoselectively. The boronyl group in the 3,3-diarylacrylates was converted into various functional groups, including
在
铑催化剂存在下,用
吡唑基
苯胺对
硼基进行临时修饰,允许芳基
丙炔酸酯和
二苯基乙炔插入芳基
硼酸的 oC-H 键,得到立体选择性带有邻
硼基的芳基
丙烯酸酯 3,3-二芳基酯和三芳基
乙烯。3,3-二芳基
丙烯酸酯中的
硼基被转化为各种官能团,包括
氯、氢、羟基和芳族基团。