Abstract
Cyclic tetraethylmetaphosphates are formed by the reaction of P 4O 10 with two moles of ethylether. The metaphosphate ester reacts rapidly with one mole of water. Complete hydrolysis at higher temperature leads to mono- and diesterified phosphates. The reactivity of the metaphosphate ester with OH- and NH- compounds in non-aqueous solvents was determined by potentiometric titrations. The consequences for the preparation of nucleosides and polynucleotides are discussed.
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