Novel <i>meta</i>-benzothiazole and benzimidazole functionalised POCOP-Ni(<scp>ii</scp>) pincer complexes as efficient catalysts in the production of diarylketones
作者:Antonio A. Castillo-García、Lucero González-Sebastián、Leticia Lomas-Romero、Simon Hernandez-Ortega、Ruben A. Toscano、David Morales-Morales
DOI:10.1039/d1nj01348c
日期:——
non-symmetric Ni(II)-POCOP pincer complexes meta-functionalized with either benzothiazole or benzimidazole at the central aryl ring is described. All complexes were fully characterised in solution by various analytical techniques and the molecular structures in the solid state of complexes 1b, 2a and 2b were unequivocally determined by single crystal X-ray diffraction analysis. In addition, the Ni(II)-POCOP
四种新型非对称Ni的合成(II)-POCOP钳形络合物的元与在中央芳基环或者苯并噻唑或苯并咪唑-官能化进行说明。通过各种分析技术在溶液中充分表征了所有配合物,并通过单晶X射线衍射分析明确确定了配合物1b,2a和2b固态的分子结构。另外,Ni(II)-POCOP钳形配合物在相对温和的条件下通过功能化的苯甲醛和硼酸衍生物的交叉偶联反应有效地用作二芳基酮的合成催化剂。这种转变的一个重要方面是对钳位配体的供体基团(OPR 2)的空间性质的依赖性,与含叔丁基取代基(1b)的化合物相比,具有含异丙基膦酸酯的活性更高的化合物(1a和2a)。和2b)。