Synthesis of 2-Cyanobenzothiazoles via Pd-Catalyzed/Cu-Assisted C-H Functionalization/Intramolecular C-S Bond Formation from N-Arylcyanothioformamides
作者:Nathan Broudic、Alexandra Pacheco-Benichou、Corinne Fruit、Thierry Besson
DOI:10.3390/molecules27238426
日期:——
We report herein on a catalytic system involving palladium and copper to achieve the cyclization of N-arylcyanothioformamides and the synthesis of 2-cyanobenzothiazoles. The C-H functionalization/intramolecular C-S bond formation reaction was achieved in the presence of air, using 2.0 equiv of an inorganic additive (KI). In many cases, the reaction led to a sole product regioselectively obtained in
我们在此报告了一种涉及钯和铜的催化系统,以实现 N-芳基氰基硫代甲酰胺的环化和 2-氰基苯并噻唑的合成。CH 功能化/分子内 CS 键形成反应是在空气存在下使用 2.0 当量的无机添加剂 (KI) 实现的。在许多情况下,该反应导致以高收率区域选择性获得的唯一产物,允许合成范围广泛的取代 2-氰基苯并噻唑衍生物,为设计更复杂的杂环或分子标记系统提供有价值的构建模块。