Iron-Catalyzed Sulfonylthiocyanation of α,β-Unsaturated Amides/Esters via the Insertion of Sulfur Dioxide
作者:Xiuwen Jia、Liping Luo、Chunxi Huang、Xuemei Zhang、Zhong Lian
DOI:10.1021/acs.orglett.2c02954
日期:2022.10.21
An iron-catalyzed four-component sulfonylthiocyanation between α,β-unsaturated amides/esters, TMSNCS, aryldiazonium tetrafluoroborates, and sulfur dioxide (from SOgen) is demonstrated. This protocol is characterized by mild reaction conditions, good functional group compatibility, broad substrate scope, and good to excellent yields, providing a feasible method for the preparation of β-thiocyanated
展示了铁催化的 α,β-不饱和酰胺/酯、TMSNCS、芳基重氮四氟硼酸盐和二氧化硫(来自 SOgen)之间的四组分磺酰硫氰化反应。该方案具有反应条件温和、官能团相容性好、底物适用范围广、产率优良等特点,为制备β-硫氰酸砜类化合物提供了一种可行的方法。初步的机制研究表明,该过程可能涉及激进途径。