Process for preparing 0,0-diaryl N,N-dialkyl phosphoramidates

Details Process for preparing 0,0-diaryl N,N-dialkyl phosphoramidates Process for preparing 0,0-diaryl N,N-dialkyl phosphoramidates

1970-10-12

1976-02-10

Sutto, Anton H.

Chemistry of carbon compounds

Dipeptides, e.g., aspartame, anserine, carnosine, etc.

428921, C07F 924, D06C 2700

Patent

active

039377652

ABSTRACT:
Flame retardant compounds, O,O-diaryl N,N-dialkyl phosphoramidates are prepared by reacting a phosphoramidohalidate or a phosphoramidic dihalide with a phenol in the presence of an alkali or alkaline earth metal hydroxide and a water-insoluble, water-immiscible, non-hydroxylic polar ketone which is a solvent for both the reactants and the product. High yields are obtained.

REFERENCES:
patent: 2520393 (1950-08-01), Fletcher
patent: 2944933 (1960-07-01), Sallmann
patent: 2994638 (1961-08-01), Malz et al.

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