|
| << vorige | volgende >> |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 234 van 252 gevonden artikelen
| Titel: |
The Effect of Substituents on the Reactivity of the Double Bond of D-Glycals |
| Auteur: |
Bovin, Nikolai V. Zurabyan, Sergei E. Khorlin, Anatoly Ya. |
| Verschenen in: |
Journal of carbohydrate chemistry |
| Paginering: | Jaargang 2 (1983) nr. 3 pagina's 249-262 |
| Jaar: |
1983 |
| Inhoud: |
A study was made concerning the effect of substituants at 0-3, 0-4 and 0-6 of d-galactal and d-glucal (1, 5-anhydro-2-deoxy-d-lyxo- and -d-arabino-hex-1-enitol, respectively) on the double bond reactivity in the chloroazide addition reaction. Results from the quantum chemical calculations of the model structures (ab initio) and also of the whole cyclic molecules in the half-chair conformation (MINDO-3) together with the reaction indices of olefin carbon atoms are presented. These studies snow that (1) the double bond reactivity and the chloroazide addition mechanism are only affected by the substituent at 0-3; (2) the influence of the acyl group is only due to its inductive effect; (3) no interaction between the acyl and the olefin fragments through space was detected. Three 0-acetyl-di-0-benzyl-d-galactals were synthesized. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 234 van 252 gevonden artikelen
| << vorige | volgende >> |