Allylboronic Esters as Acceptors in Radical Addition, Boron 1,2-Migration, and Trapping Cascades
作者:Kalipada Jana、Armido Studer
DOI:10.1021/acs.orglett.2c00039
日期:2022.2.4
Radical 1,3-carboheteroarylation and 1,3-hydroalkylation of allylboronic esters comprising a 1,2-boron shift is reported. Allylboronic esters are generally used in synthesis as allylation reagents, where the boronic ester moiety gets lost. In the introduced cascades, alkylboronic esters are obtained with the boron entity remaining in the product. The carboheteroarylation of the allylboronic esters
报道了包含 1,2-硼位移的烯丙基硼酸酯的自由基 1,3-碳杂芳基化和 1,3-氢化烷基化。烯丙基硼酸酯通常在合成中用作烯丙基化试剂,其中硼酸酯部分会丢失。在引入的级联中,得到烷基硼酸酯,而硼实体保留在产物中。烯丙基硼酸酯的碳杂芳基化是在没有金属催化剂的情况下进行的,而 1,3-氢化烷基化是使用铁催化实现的。这两种反应都在温和条件下有效地进行。