## Abstract The addition of cyanohydric acid to 1,2:5,6‐di‐O‐isopropylidene‐α‐D‐__ribo__‐hexofurannos‐3‐ulose can be sterically controlled. Under kinetic conditions, the __allo__ cyanohydrine epimer is formed, under thermodynamic conditions, the __gluco__ epimer is formed. The configuration of thes
Synthèse des (R)- et (S)-O-isopropylidène-1,2-glycérols. Détermination de la pureté optique
✍ Scribed by Georges Hirth; Willy Walther
- Publisher
- John Wiley and Sons
- Year
- 1985
- Tongue
- German
- Weight
- 587 KB
- Volume
- 68
- Category
- Article
- ISSN
- 0018-019X
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## Abstract The mass spectra of the O‐isopropylidene derivatives of __threo__‐ and __erythro__‐furanose and those of the four C(4) methylated stereoisomers have been studied. Fragmentation modes based upon deuterium labelling, metastable peaks and high‐resolution measurements are proposed. Each ste
## Quelques derives de la dinaphtanthracene-diquinone et synthese de la dinaphtaline-anthracene-diquinone par Henri de Diesbaeh e t Victor Schmidt. (30. IV. 24.) Nous a w n s clans m e prkcedente publication1) indiquk line synthbse simple de I'acide pyromellithique. Celle-ci consistrait a Bchmge
La reference [2] constitue la deuxikmc communication de cette sCrie.