2,4-O-benzylidene-D-ribono-1,5-lactone: A revision of structure
✍ Scribed by Gordon J. F. Chittenden; Henk Regeling
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 235 KB
- Volume
- 105
- Category
- Article
- ISSN
- 0165-0513
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
D-Ribono-1,4-lactone was treated with ethylamine in DMF to afford N-ethyl-D-ribonamide 9a in quantitative yield. Bromination of amide 9a by the system SOBr 2 in DMF or PPh 3 /CBr 4 in pyridine led, after acetylation, to epoxide 7. However, treatment of amide 9a with acetyl bromide in dioxane followe
X-ray crystallographic analysis firmly establishes the ribo stereochemistry and the unusual boat conformation of the title branched carbon chain lactone, C 9 H 13 N 3 O 4 , arising from an unexpected rearrangement in the nucleophilic substitution of a trifluoromethanesulfonate. There are two molecul
The relative configuration of the title lactone, C 10 H 15 N 3 O 4 , a compound of value in the synthesis of complex pyrrolidines, was determined by X-ray crystallographic analysis.
Single-crystal X-ray study T = 120 K Mean '(C±C) = 0.004 A Ê R factor = 0.045 wR factor = 0.102 Data-to-parameter ratio = 11.0 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.