SYNTHESIS OF ARYL DICHLOROPHOSPHATES USING PHASE-TRANSFER CATALYSTS

Synthesis of aryl dichlorophosphates has been carried out using phase transfer method. Two strategies, one involving solid-liquid and the ot her liquid-liquid phase transfer catalysts, have been used to synthesi ze phenyl, p-nitrophenyl and o-chlorophenyl phosphoro-dichloridates. I n either case, the phenoxide ions are carried from the solid or aq. ph ase with the help of a phase transfer catalyst into the organic phase where the reaction with phosphoryl chloride occurs efficiently. A poss ible mechanism has been proposed.