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Polymer ester von sären des phosphors, 7. Polymerisation des 1-oxo-2,6,7-trioxa-1-phosphabicyclo[2.2.1]heptans

✍ Scribed by Gehrmann, Thomas ;Vogt, Walter


Publisher
Wiley (John Wiley & Sons)
Year
1981
Weight
393 KB
Volume
182
Category
Article
ISSN
0025-116X

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✦ Synopsis


Abstract

1‐Oxo‐2,6,7‐trioxa‐1‐phosphabicyclo[2.2.1]heptane is transformed in situ (prepared from trimethyl phosphite and glycerol) at −78°C in the presence of a trace of water into a crosslinked polymer containing constitutional repeating units with 5‐ and 6‐membered rings. The reaction with reagents containing hydroxyl groups (water, acetic acid, alcohol) leads to the degradation of the network with the formation of soluble fragments with P~n~ = 35–50. This reactivity and the possibility to obtain other derivatives from the fragments make this polymer a carrier for pharmacologically active polymers with the advantage of decomposing only into the innocuous components phosphoric acid and glycerol.


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