Vol. 75 OMPA Synthesis with a Stoichiometric Amount of Triamido Phosphate.-A mixture of 55 g. of tetramethyldiamidophospnoryl chloride, 38.5 g. of hexamethylphosphoramide, and 19.6 g. of triethyl phosphate in the mole ratio of 3:2:1 was heated with agitation at 155°. The released gas was absorbed in ethanol and identified as ethyl chloride. Its amount was determined by weighing the reaction mixture repeatedly as the reaction progressed. According to
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