Double-Carboxylation of Two C–H Bonds in 2-Alkylheteroarenes Using LiO-<i>t</i>-Bu/CsF
作者:Masanori Shigeno、Keita Sasaki、Kanako Nozawa-Kumada、Yoshinori Kondo
DOI:10.1021/acs.orglett.9b01386
日期:2019.6.21
in 2-alkylheteroarenes using a combination of LiO-t-Bu and CsF. A diverse range of substrates, namely benzothiophene, thiophene, benzofuran, furan, and indole derivatives, are efficiently converted into the doubly carboxylated products. A variety of functionalities (i.e., methyl, methoxy, halogen, cyano, ester, ketone, and amide moieties) are well tolerated.
我们描述了使用LiO- t -Bu和CsF的组合,在2-烷基杂芳烃中的两个C–H键(即在苄基和β位置)的双羧基化。各种各样的底物,即苯并噻吩,噻吩,苯并呋喃,呋喃和吲哚衍生物,都可以有效地转化为双羧基化产物。多种功能(例如,甲基,甲氧基,卤素,氰基,酯,酮和酰胺部分)具有良好的耐受性。