## Abstract A bisimidazoline compound has been prepared as a new chiral solvating agent starting from isophthalaldehyde and (__S__,__S__)‐1,2‐diphenylethylenediamine through a single‐step synthesis. In the presence of one equivalent of this reagent, carboxylic acid racemates show ^1^H NMR chemical
A new chiral solvating agent for carboxylic acids based on directed hydrogen bonding
✍ Scribed by Thomas Stork; Günter Helmchen
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 185 KB
- Volume
- 114
- Category
- Article
- ISSN
- 0165-0513
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📜 SIMILAR VOLUMES
Enantiomers of t-butylphenylphosphinothioic acid were found to be useful chiral solvating agents (CSAs) for 1H-NMR determination of enantiomeric excess (ee) of many classes of chiral organic compounds, such as alcohols, diols, thiols, mercaptoalcohols, amines, amlnoalcohols, hydroxyacids and related
## Abstract Tartaric acid‐based selectors **1** ((__R,R__)‐O,O′‐Bis(dimethylbenzoyl)‐N,N′‐diallyl‐N,N′‐dimethyl tartaramide) and **2** ((__R,R__)‐N‐allyl‐O,O′‐bis(dimethylbenzoyl) tartarimide) were synthesized, immobilized on silica, and evaluated as chiral stationary phases in enantioselective chr