Untersuchung über Einschlußdiastereomerie und Bestimmung der absoluten Konfiguration des hexagonalen Harnstoffgitters
✍ Scribed by Dr. Wilhelm Schlenk jr.
- Publisher
- John Wiley and Sons
- Year
- 1960
- Tongue
- English
- Weight
- 633 KB
- Volume
- 72
- Category
- Article
- ISSN
- 0044-8249
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📜 SIMILAR VOLUMES
## Abstract The synthesis is described of the monoethyl ester chlorides of (__S__)‐ and (__R__)‐methyl benzyloxy malonic acid which are intermediates in the synthesis of ergotamine. Their absolute configuration was determined by linking the levorotatory antipode with __S__‐(+)‐citramalic acid.
## Abstract Das mediale (1__R__,1′__S__,2__S__)‐ (**1b**) und das distale (__S,S__)‐1,1′‐Dimethyl‐2,2′spirobiindan (**1c**) werden enantiomerenrein (e.e. > 96%) dargestellt. Ihre absoluten Konfigurationen sind durch die der Ausgangssubstanz (__S__)‐3‐Phenylbuttersäure und den Syntheseweg eindeutig