Copper‐Catalyzed Radical Cross‐Coupling of Oxime Esters and Sulfinates for Synthesis of Cyanoalkylated Sulfones
作者:Xue‐Song Zhou、Ying Cheng、Jun Chen、Xiao‐Ye Yu、Wen‐Jing Xiao、Jia‐Rong Chen
DOI:10.1002/cctc.201901695
日期:2019.11.7
Sulfones and alkylnitriles play a significant role in both organic and medicinal chemistry, as versatile synthetic building blocks and privileged pharmacophores in many natural products and bioactive compounds. Herein, a room‐temperature, copper‐catalyzed radical cross‐coupling of redox‐active cycloketone oxime esters and sulfinate salts is described for the first time. Key to the success of this process
砜和烷基腈在有机和药物化学中均起着重要作用,它是许多天然产物和生物活性化合物中的通用合成构件和特权药效团。本文首次描述了氧化还原活性环酮肟酯和亚磺酸盐在室温下铜催化的自由基交叉偶联。该过程成功的关键在于催化生成环状亚氨基自由基,并随后进行开环CC键裂解。然后将所得的氰基烷基自由基与亲核亚磺酸盐交叉偶联,形成氰基烷基化砜。