Catalytic properties of polymer-colloid complexes based on polyethyleneimines and mono- and diquaternized 1,4-diazabicyclo[2.2.2]octane derivatives in the hydrolysis of phosphorus acids esters

摘要: It is established by spectrophotometry that polyethyleneimines, mono- (MQD) and diquaternized (DQD) hexadecyl derivatives of 1,4-diazabicyclo[2.2.2]octane, mixed polymercolloid systems based thereon catalyze the hydrolysis p-nitrophenyl alkyl chloromethylphosphonates. The catalysis efficiency depends on structures substrate, 1,4-diazabicyclo-[2.2.2]octane derivatives, polyethyleneimine, pH medium, temperature. In case MQD, catalytic effect changes from 20 to 80-fold with an increase in length phosphonate radical R = OEt OC6H13; DQDs exhibit lower activity compared MQD. most efficient (up 90-fold acceleration) observed for a polyethylene—dicationic surfactant system where contains hydroxyethyl fragment head group, which due favorable micellar microenvironment reagents.