Catalytic Hydrolysis of Phosphate Diester with Metal Complexesof Macrocyclic Tetraamine in Comicellar Solution

摘要

Four novel pyridine or benzene ring-containing pendant macrocyclic dioxotetraanines 2,6-dioxo-1,4,7,10-tetraazacy-clododeane ligands have been synthesized.Their metal com-plexes have been investigated as catalysts for the hydrolysis of bis(p-nitrophenyl) phosphate (BNPP) in aqueous comicellar solution.The results indicate that the hydrophobic interaction between substrate and metal complex, the nature of transition metal ion, and the micellar microenvironment are important factors for the hydrolysis, of BNPP.Large rate enhancement (up to over two-three orders magnitude) employing 5 hasbeen observed.