Palladium-Catalyzed Highly Regio- and Stereoselective Addition of Organoboronic Acids to Allenes in the Presence of AcOH
作者:Shengming Ma、Ning Jiao、Longwu Ye
DOI:10.1002/chem.200305301
日期:2003.12.15
The Pd(0)-catalyzed regio- and stereoselective addition of organoboronic acids to allenes leads to stereodefined tri- or tetrasubstituted alkenes. Furthermore, this method shows high substitutent-loading capability and tolerance of various substitutents. A hydropalladation-Suzuki coupling mechanism, which may account for the regio- and stereoselectivity, is proposed.
Pd(0)催化的有机硼酸向烯基的区域和立体选择性加成反应生成立体定义的三或四取代烯烃。此外,该方法显示出高的替代物装载能力和各种替代物的耐受性。提出了氢沉钯-铃木偶联机理,其可以解释区域选择性和立体选择性。