The cross-coupling reaction of organoalane reagents with 2-methylthiobenzo[<i>d</i>]thiazoles<i>via</i>C–S bond cleavage catalyzed by nickel
作者:Xin Jiang、Hongliu Xiao、Xiaoying Jia、Jiaxia Pu、Lirong Han、Qinghan Li
DOI:10.1039/d3nj02026f
日期:——
2-methylthiobenzo[d]thiazoles with aryl and alkenylaluminum reagents. Various 2-(hetero)aryl and 2-alkenyl substituted benzo[d]thiazoles derivatives can be obtained with 31–94% isolated yields using 4 mol% NiCl2(dppf)/4 mol% 2,2′-bipyridine as the catalyst under mild reaction conditions. The coupling reaction can be carried out smoothly whether the electron donor group or electron withdrawing group is on the aromatic
通过镍催化 2-甲硫基苯并[ d ]噻唑与芳基和烯基铝试剂的交叉偶联,开发了一种高效且简单的合成 2-取代苯并[ d ]噻唑的路线。使用 4 mol% NiCl 2 (dppf)/4 mol% 2,2'-联吡啶作为催化剂,可以得到各种 2-(杂)芳基和 2-烯基取代的苯并[ d ]噻唑衍生物,分离产率为 31-94%在温和的反应条件下。无论给电子基团或吸电子基团在有机铝试剂的芳香环上还是2-甲硫基苯并[ d]上,偶联反应都能顺利进行。]噻唑衍生物。此外,广泛的底物范围和典型的克级高效维持使该方案成为合成 2-取代苯并[d ]噻唑衍生物的潜在实用方法。根据实验结果,提出了一种可能的催化循环。