A new amido-phosphane as ligand for copper and silver complexes. Synthesis, characterization and catalytic application for azide–alkyne cycloaddition in glycerol
作者:Abdallah G. Mahmoud、M. Fátima C. Guedes da Silva、Armando J. L. Pombeiro
DOI:10.1039/d1dt00992c
日期:——
it a very versatile ligand that could be used in a variety of reaction systems. To assess the coordination characteristics of the new phosphane, seven copper complexes of formulas [Cu(DBPTA)4]BF4 (2), [CuX(DBPTA)3] X = Br (3) and I (4)}, [Cu(μ-X)(DBPTA)2]2 X = Br (5) and I (6)}, [Cu(bpy)(DBPTA)2]Y Y = BF4 (7) and BPh4 (8)} bpy = 2,2′-bipyridine}, and three silver complexes with formulas [Ag(DBPTA)4]NO3
新的位阻酰胺基膦1,3,7-三氮杂-5-磷杂双环[3.3.1]壬烷-3,7-二基双(苯甲酮)DBPTA(1)是通过开笼双N-获得的。使用苯甲酸酐酰化1,3,5-triaza-7-phosphadamantane(PTA)。DBPTA是PTA唯一包含芳族附件的酰基衍生物。由于苯甲酰基C(O)Ph基团的大体积性质,它们表现出互为反构型,如溶液NMR和单晶X射线衍射所证实的。化合物1易溶于常见的极性有机和绿色溶剂,使其成为一种用途广泛的配体,可用于各种反应系统。为了评估新膦的配位特性,需要七个式[Cu(DBPTA)4 ] BF 4(2),[CuX(DBPTA)3 ] X = Br(3)和I(4)},[ Cu(μ-X)(DBPTA)2 ] 2 X = Br(5)和I(6)},[Cu(bpy)(DBPTA)2 ] Y Y = BF 4(7)和BPh 4(8}} bpy = 2,2'-bipy