Suzuki-Miyaura cross-coupling reaction catalyzed by Pd(II) complexes of N,O-donor Schiff base ligands
作者:Dhan Raj Meena、Suman Meena、Surendra Singh
DOI:10.1016/j.poly.2023.116655
日期:2023.11
crystal of complexes 5c, 5f, 5h, 5j, and 5t were diffracted by single crystal XRD, and crystal structure of these Pd(II) complexes represents trans geometry. Different Pd(II) complexes of the ligands with electronic and steric effects were evaluated in the Suzuki-Miyaurareaction were explored. Moreover, the reaction parameters such as substrate to base (K2CO3) ratio, temperature, solvent, catalyst loading
评估了由二齿 N,O-供体配体合成的 Pd(II) 配合物对卤代芳烃(碘/溴/氯)与给电子/吸电子基团之间Suzuki-Miyaura CC 偶联反应的催化活性含有苯基硼酸。N,O-供体配体由水杨醛、3,5-二叔丁基水杨醛、3-叔丁基水杨醛、5-叔丁基水杨醛与苯胺和苯胺衍生物合成。通过单晶XRD对配合物5c、5f、5h、5j和5t的单晶进行衍射,这些Pd(II)配合物的晶体结构表示反式几何学。探索了铃木-宫浦反应中具有电子和空间效应的配体的不同 Pd(II) 配合物。此外,还研究了苯硼酸和芳基卤化物催化偶联的反应参数,例如底物与碱(K 2 CO 3 )的比例、温度、溶剂、催化剂负载量、空间和电子效应。Pd(II)催化剂5a在广泛的给电子/吸电子芳基碘化物和芳基溴化物中具有高活性。K 2 CO 3存在下的催化剂5a ( 0.05 mol%)120 °C 的 DMF 碱对多种含有给电子/吸电子基团的苯基硼酸表现出优异的活性,2-4
[EN] CYCLIC AZINE COMPOUND, METHOD FOR PRODUCING SAME, AND USE OF SAME<br/>[FR] COMPOSÉ AZINE CYCLIQUE, SON PROCÉDÉ DE FABRICATION ET SON UTILISATION<br/>[JA] 環状アジン化合物、その製造方法、及びその用途