Recherches sur la formation et les transformations des esters XXXIII. Etude du mécanisme de la scission alcaline des monoesters phosphoriques à l'aide de H218O
✍ Scribed by E. Cherbuliez; H. Dahn; H. Moll; H. Probst; J. Rabinowitz
- Publisher
- John Wiley and Sons
- Year
- 1962
- Tongue
- German
- Weight
- 379 KB
- Volume
- 45
- Category
- Article
- ISSN
- 0018-019X
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📜 SIMILAR VOLUMES
## Abstract The synthesis and the rate of scission of some new cyanoalkyl‐phosphoric monoesters are described. In the case of β‐cyanoalkyl‐phosphoric monoesters, the monoester group is no more dephosphorylated in alkaline medium when the two H in the β position are substituted by alkyl groups.
Phosphorous acid does not dehydrate tertiary alcohols at temperatures below 100 "C ; but the esterification reaction is very slow and phosphorous monoesters of tertiary alcohols cannot be obtained this way. Although this reaction is also slow with phenol, phenyl phosphorous monoester can be obtained
## Abstract Tetracoordinated acids of phosphorus (acids of type A) where the P atom is bonded to 4 O, or to 3 O and 1 C, are not esterificd when heated with alcohols.
## Abstract Phosphorous monoesters of amino alcohols are obtained by heating equimolecular amounts of phosphorous acid and the corresponding amino alcohol at 150–200°, under reduced pressure.
## Abstract Some arguments are advanced to show that the curve representing the apparent constants of the rate of hydrolysis of monoalkyl phosphoric acids as function of the pH offers not only the well known minimum at about pH 0 and maximum at pH 4·5, but a second minimum at high pH. The interpret