Investigation on the Acylation of Heterocyclic Alcoholate Anions with O,O-Dialkyl Phosphorochloridothioate in Water Solvent

Abstract The acylation of some heterocyclic alcoholate anions with O,O-dialkyl phosphorochloridothioate has been investigated. Higher yields and fewer byproducts were achieved in water at 50 °C by employing an effective phase-transfer catalyst (PTC) (benzyl triethylammonium chloride [BTEAC]), acylation catalyst (AC) (4-dimethylaminopyridine), and surfactant (sodium dodecyl sulfate), under weakly basic (pH 9.5∼10) conditions. This reaction can also be applied to synthesize other insecticides with excellent yields.