The rate of hydrolysis of phenylphosphonic monoesters at different pH values (0,4,5 and 14), at 100° and in 0,1M solutions, is studied.
Recherches sur la formation et la transformation des esters XXI. Sur la phosphorylation des hydroxynitriles et sur la vitesse d'hydrolyse des dérivés phosphorylés obtenus
✍ Scribed by Emile Cherbuliez; G. Cordahi; J. Rabinowitz
- Publisher
- John Wiley and Sons
- Year
- 1960
- Tongue
- German
- Weight
- 469 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
Hydroxy nitriles when treated with polyphosphoric acid yield the corresponding carbamido‐alkyl phosphoric acids; but when treated with POCl~3~ in the presence of a tertiary base they yield the corresponding cyano‐alkyl phosphoric acids. β‐cyanoethyl phosphoric acid is very easily dephosphorylated in 1N NaOH. β‐X‐alkyl‐phosphoric esters are dephosphorylated in alkaline medium when –X is C,
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0‐, __m__‐ and __p__‐sulfophenylphosphoric acids have been prepared from PC1~5~ and the corresponding phenolsulfonic acids. The rates of hydrolysis of these phosphoric esters at pH 0 (HCl 1N), 4,5 and 14 (NaOH 1N) and at 100° have been established.
## Abstract Carboxy‐alkyl phenylphosphonic monoesters are obtained very easily by selective hydrolysis (in alcaline medium) of the corresponding carbamido‐ or cyano‐alkyl phenylphosphonic monoesters and sometimes of the corresponding carbethoxy‐alkyl phenylphosphonic monoesters and sometimes of the
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