In:
Zeitschrift für Naturforschung B, Walter de Gruyter GmbH, Vol. 26, No. 7 ( 1971-7-1), p. 694-700
Abstract:
Reaction rates of the ethanolysis and hydrolysis of the phenyl- and methylpolyphosphate-esters and of tetraphenylpyrophosphate were measured by potentiometric titration methods. Exceptionally high rate constants were obtained for the solvolysis of these compounds, some reactions occurring with half-times of less than 10 seconds. The phosphorylating activity of the phenylpolyphosphateester on polyfunctional nucleophilic compounds (SN 2P -reaction) was tested and shown to exceed the activity of the conventional agent diphenylphosphoro-chloridate considerably. The catalytic effects of dimethylformamide were measured under several conditions and were shown to be complex solvent phenomena rather than conventional catalysis. The reactivity of the polyphosphate-esters is discussed with respect to their structure as well as the reactivity of P -O -P-bonds as a function of their ligands.
Type of Medium:
Online Resource
ISSN:
1865-7117
,
0932-0776
DOI:
10.1515/znb-1971-0711
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
1971
detail.hit.zdb_id:
2078109-X
detail.hit.zdb_id:
124635-5
