Abstract
AbstractThe kinetics of the reaction between ethylene oxide and diethyl phosphoric acid (diethyl hydrogen phosphate) was studied in order to elucidate the mechanism of addition of oxiranes to phosphoric acid, the first reaction leading to phosphorus‐containing polyols. It was shown that the reaction proceeds by addition of the activated ethylene oxide molecule to the POH bond. Due to the low ionisation constant of the acid, activation via formation of the secondary oxonium ion plays a minor role, and the reaction proceeds mainly with participation of hydrogen‐bonded complexes.
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