Synthesis of Chiral Sulfoxides via Pd(II)-Catalyzed Enantioselective C–H Alkynylation/Kinetic Resolution of 2-(Arylsulfinyl)pyridines
作者:Tao Zhou、Meng-Xue Jiang、Pu-Fan Qian、Qi-Jun Yao、Xue-Tao Xu、Kun Zhang、Bing-Feng Shi
DOI:10.1021/acs.orglett.1c02918
日期:2021.10.15
A Pd(II)-catalyzed enantioselective C–H alkynylation of 2-(arylsulfinyl)pyridines via kinetic resolution using cheap and commercially available l-pGlu-OH as a chiral ligand is reported. A wide range of 2-(arylsulfinyl)pyridines were compatible with this protocol, giving the alkynylation products and recovered sulfoxides in high yields with high enantioselectivities (up to 99% ee). Furthermore, the
据报道,Pd(II) 催化的 2-(芳基亚磺酰基)吡啶的对映选择性 C-H 炔基化反应通过动力学拆分使用廉价且市售的l - p Glu-OH 作为手性配体。范围广泛的 2-(芳基亚磺酰基)吡啶与该方案兼容,以高产率和高对映选择性(高达 99% ee)提供炔基化产物和回收的亚砜。此外,对映体富集的产品可以很容易地转化为几种其他类型的手性亚砜支架,同时保留对映体纯度。