✦ LIBER ✦
Nachbargruppeneffekte in der Gas-Phase: Intramolekulare Deacetalisierung von Hydroxyacetalen unter den Bedingungen der chemischen Ionisation
✍ Scribed by Stefan Matile; Agnes Janowitz; Sandro Ghirlanda; Annalaura Lorenzi-Riatsch; Albert Horni; Attila Moricz; Stefan Bienz; Norbert Bild; Wolf-Dietrich Woggon; Manfred Hesse
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- German
- Weight
- 298 KB
- Volume
- 76
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
Neighboring-Group Participation in the Gas Phase: Intramolecular Deacetalization of Hydroxyacetals under the Conditions of Chemical Ionization
Under the conditions of chemical ionization (NH,, isobutane, ND,), hydroxyacetals do not show the expected [M + H]+ signal, but the peak corresponding to the loss of the alcohol component of the acetal. This reaction is dependent on the presence of the OH group in the vicinity of the acetal and on the ring size of the heterocycle being formed. M" is detected to a small extent as a consequence of charge exchange during chemical ionization. ~~ ') *) ')