炔丙二醇,2-炔基-1-(indol-3-yl)-1,2-二醇,与硫醇反应,发生复杂但选择性的金催化转化,生成 α-indol-3-yl α-(( Z )-2-硫代烯基)酮。该序列由吲哚二醇的区域选择性硫醇化引发,然后是硫而不是吲哚对活化炔的攻击。最终化合物以非常高的收率获得,并且由简单的起始材料如吲哚基丙烯酰、乙炔基溴化镁和硫醇产生。
Synthesis of α-functionalized α-indol-3-yl carbonyls through direct S<sub>N</sub> reactions of indol-3-yl α-acyloins
作者:Anisley Suárez、Fernando Martínez、Roberto Sanz
DOI:10.1039/c6ob02125e
日期:——
α-indol-3-yl ketones from easily available indolyl α-acyloins is reported. This process, catalyzed by Brønsted or Lewis acids, involves an uncommon direct nucleophilic substitution reaction of a secondary α-carbonyl-substituted hydroxyl group. The described methodology allows the introduction of a variety of nucleophiles such as (hetero)arenes, thiophenols, nitroanilines and 1,3-dicarbonyl derivatives. The