The chromatographic parameters for 12 structurally related compounds in the 4a-methyl-2,3,4,4a-tetrahydro-1H-fluorene and 4a-methyl-1,2,3,4,4a,9a-hexahydrofluoren-9-one series are reported on CTA-I and Chiralcel OJ chiral stationary phases. Arrangement of the k' values according to configurationally
Preparative scale enantioseparation of 1-cyclohexyl-1-phenylethyl hydroperoxide and 1,2,3,4-tetrahydro-1-naphthyl hydroperoxide on a modified cellulose stationary phase
✍ Scribed by Dr. Jürgen Wagner; Hans-Jürgen Hamann; Werner Döpke; Annamarie Kunath; Eugen Höft
- Book ID
- 102072186
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 407 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0899-0042
No coin nor oath required. For personal study only.
✦ Synopsis
The analytical and preparative scale optical resolution of 1-cyclohexyl-1phenylethyl hydroperoxide and 1,2,3,4-tetrahydro-1-naphthyl hydroperoxide has been achieved by chiral HPLC on a cellulose tris(3,5-dimethylphenyl carbamate) stationary phase coated on silica gel. The method has been used to obtain several hundred milligrams of highly enriched enantiomers (%ee >98) which were characterized by [ . I u and circular dichroism spectra, respectively. Configurational assignments were achieved for 1,2,3,4-tetrahydro-1naphthyl hydroperoxide enantiomers.
📜 SIMILAR VOLUMES
The preparative separation of the enantiomers of the title compound, a versatile chiral building block for the synthesis of unnatural amino acid esters, by high performance liquid chromatography on a chiral stationary phase (CSP), is reported for the first time. The CSP consists of amylose-(3,5-dime
## Abstract A novel chiral stationary phase (CSP) for HPLC was prepared by bonding (__R__)‐1‐phenyl‐2‐(4‐methylphenyl)ethylamine amide derivative of (__S__)‐valine to aminopropyl silica gel through a 2‐amino‐3,5‐dinitro‐1‐carboxamido‐benzene unit. The CSP was used for the separation of some amino a