Iron‐Catalyzed Three‐Component Cyanoalkylsulfonylation of 2,3‐Allenoic Acids, Sulfur Dioxide, and Cycloketone Oxime Esters: Access to Cyanoalkylsulfonylated Butenolides
作者:Xiangyun Zheng、Tianshuo Zhong、Xiao Yi、Qitao Shen、Chuanliu Yin、Lei Zhang、Jian Zhou、Junyu Chen、Chuanming Yu
DOI:10.1002/adsc.202100463
日期:2021.7
An iron-catalyzed three-component cyanoalkylsulfonylation of 2,3-allenoic acids, K2S2O5, and the ring-opening of cyclobutanone oxime esters is described. The radical tandem cyclization route allows access to diverse cyanoalkylsulfonylated butenolides in moderate to good yields under mild conditions. Moreover, the products are further converted, offering the corresponding derivatives.
描述了铁催化的 2,3-丙二烯酸、K 2 S 2 O 5 的三组分氰基烷基磺酰化和环丁酮肟酯的开环。自由基串联环化路线允许在温和条件下以中等至良好的产率获得各种氰基烷基磺酰化丁烯内酯。此外,产品进一步转换,提供相应的衍生产品。