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
Reaction of Arylglyoxals with Electron‐Rich Benzenes and π‐Excessive Heterocycles. Facile Synthesis of Heteroaryl α‐Acyloins
作者:Sergey P. Ivonin、Andrey V. Lapandin、Andrey A. Anishchenko、Vasilii G. Shtamburg
DOI:10.1081/scc-120027284
日期:2004.12.31
Abstract The reaction of arylglyoxals and their hydrates with electron‐rich benzenes and π‐excessive heterocycles, if conducted in the absence of catalysts, affords α‐benzoins.
Mass-spectral behavior and thermal stability of hetaryl analogs of unsymmetrical benzoins
作者:S. P. Ivonin、A. V. Mazepa、A. V. Lapandin
DOI:10.1007/s10593-006-0110-6
日期:2006.4
Gold‐Catalyzed Reactions of 2‐Alkynyl‐1‐indolyl‐1,2‐diols with Thiols: Stereoselective Synthesis of (
<i>Z</i>
)‐α‐Indol‐3‐yl α‐(2‐Thioalkenyl) Ketones
α-indol-3-yl α-((Z)-2-thioalkenyl) ketones. The sequence is triggered by the regioselective thiolation of indolyl diols followed by an attack of the sulfur instead of the indole over the activated alkyne. The final compounds are obtained in remarkably high yields and arise from simple starting materials such as indolyl acyloins, ethynyl magnesium bromide and thiols.
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。