Catalytic hydrolysis of phosphate esters by metallocomplexes of 1,10-phenanthroline derivatives in micellar solution
作者:John G. J. Weijnen、Johan F. J. Engbersen
DOI:10.1002/recl.19931120608
日期:——
ligand-MII-phosphate ester complexes, which decay to products. The hydrolysis of diphenyl 4-nitrophenyl phosphate (1b) coordinated to C12PhenZnII proceeds 8700 times faster than the hydrolysis of 1b in the absence of metallocatalyst. Kinetic studies indicate that phosphate triesters containing a metal-ion-binding site in close proximity to the phosphoryl bond, i.e., diphenyl 5-nitro-2-pyridyl phosphate (2b) and diphenyl
在中性Brij 35胶束中的2,9-双[(甲基十二烷基氨基)甲基] -1,10-菲咯啉(C 12酚M II)的二价金属离子络合物催化各种磷酸盐三酯,二酯和单酯的水解。已将C 12 Phen M II的催化活性与其水溶性对应物2,9-双[(二甲基-氨基)甲基] -1,10-菲咯啉(C 1 Phen M II)。饱和动力学为初步形成配体-M II-磷酸酯配合物提供了证据,该配合物会分解为产物。磷酸二苯基4-硝基苯酯的水解(1b)配位到C 12 Phen Zn II的过程比不存在金属催化剂时1b的水解快8700倍。动力学研究表明,磷酸三酯包含一个紧密靠近磷酰基键的金属离子结合位点,即磷酸二苯基5-硝基-2-吡啶基磷酸酯(2b)和磷酸二苯基5-硝基8-喹啉基磷酸酯(3),通过与1b相同的机理进行水解。