5,6-Membered palladium pincer complexes of 1-thiophosphoryloxy-3-thiophosphorylbenzenes. Synthesis, X-ray structure, and catalytic activity
作者:V. A. Kozlov、D. V. Aleksanyan、Yu. V. Nelyubina、K. A. Lyssenko、E. I. Gutsul、A. A. Vasil'ev、P. V. Petrovskii、I. L. Odinets
DOI:10.1039/b907644a
日期:——
Novel unsymmetrical ligands, 1-thiophosphoryloxy-3-thiophosphorylbenzenes 3a-d, bearing phosphine sulfide and thiophosphoryloxy moieties as coordinating sites, were found to undergo cyclometalation at the C-2 position of the central benzene ring in a reaction with bis(benzonitrile)palladium dichloride affording rare examples of nonsymmetrical pincer complexes, namely [2-(thiophosphoryl)oxy}-6-(di
发现新的不对称配体,带有硫化膦和硫代磷酰氧基部分作为配位点的1-硫代磷酰氧基-3-硫代磷酰苯3a-d,在与双(苯甲腈)钯的反应中,在中心苯环的C-2位置经历了环金属化反应二氯化物提供了非对称钳状配合物的稀有实例,即[2-((硫代磷酰基)氧基} -6-(二苯基硫代磷酰基)苯基]氯化钯4a-d,其中含有5元和6元稠合的金属环,并带有kappa3-SCS'配位。通过X射线衍射表征复合物的分子结构。这些配合物对芳基溴化物与苯基硼酸的Suzuki交叉偶联反应显示出高催化活性。