Functionalized mercaptoacetic and propionic acid amides: synthesis, cyclopalladation features, and catalytic activity of metal complexes
作者:S. G. Churusova、D. V. Aleksanyan、Z. S. Klemenkova、Yu. V. Nelyubina、O. I. Artyushin、A. A. Vasil’ev、V. A. Kozlov、D. V. Sudarikov、S. A. Rubtsova
DOI:10.1007/s11172-015-1207-9
日期:2015.11
Upon treatment with thiophenol or neomenthyl mercaptane, chloroacetand propionamides with an additional Nor S-donor substituent in the amine part gave new multidentate ligands readily undergoing direct cyclopalladation in the reaction with PdCl2(NCPh)2. The realization of κ3-X, N, S-coordination (X = N, S) in the complexes obtained was confirmed by IR and NMR spectroscopy and, in some cases, by single-crystal X-ray crystallography. The evaluation of catalytic activity of the palladocycles in the Suzuki cross-coupling of aryl bromides with PhB(OH)2 allowed us to establish the principal structure—activity correlations.
在与 PdCl2(NCPh)2 反应中,用噻吩酚或新戊硫醇处理后,胺部分带有额外的 Nor S 取代基的氯乙酰胺和丙酰胺会产生新的多齿配体,并很容易发生直接环钯化反应。红外光谱和核磁共振光谱以及某些情况下的单晶 X 射线晶体学证实了所获得的配合物中存在 κ3-X, N, S 配位(X = N, S)。通过评估帕拉多环在芳基溴与 PhB(OH)2 的铃木交叉偶联反应中的催化活性,我们确定了主要的结构-活性相关性。