Thermostat auf 130,5O eingestellt und dic RG des 3-exo-Chlorids la gemessen. Zu diesem Zweck musste die durch die Reaktion von 2a hervorgerufene Leitfahigkeit durch einen Widerstand kompensiert werden.
Recherches sur la formation et la transformation des esters LXXIII Sur la préparation d'acides ω-[aryl (ou aralcoyl ou alcoyl) carbamylamino]-alcoylphosphoriques et sur leur vitesse de scission à divers pH
✍ Scribed by Emile Cherbuliez; B. R. Behler; O. Espejo; E. Frankenfeld; S. Jaccard; J. Rabinowitz
- Publisher
- John Wiley and Sons
- Year
- 1967
- Tongue
- German
- Weight
- 376 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
et la transformation des esters LXXIIIl) Sur la preparation d'acides o-[aryl (ou aralcoyl ou alcoyl) carbamylamino]-alcoylphosphoriques et sur leur vitesse de scission A divers pH
📜 SIMILAR VOLUMES
actif. On filtre et neutralise le filtrat au besoin B p H 4 4 par de l'ac6tate de sodium (afin d'6viter l'hydrolyse du monoester). On ajoute 1 vol. d'acdtone; il se separe un produit huileux. On d6cante la phase aquo-acdtonique qu'on Bvapore sec sous vide. Le r6sidu est repris par du methanol bouill
## 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.
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
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 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.