𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Separation of geometric isomers of metal β-diketonates by supercritical fluid chromatography

✍ Scribed by Laintz, Kenneth E. ;Meguro, Joshihiro ;Iso, Shuichi ;Tachikawa, Enzo

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
420 KB
Volume
16
Category
Article
ISSN
0935-6304

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The separation of the geometric isomers of chromium and rhodium chelates of trifluoroacetylacetone and thenoyltrifluor‐oacetone was investigated using packed column supercritical fluid chromatography. Mobile phases consisting of neat and alcohol‐modified carbon dioxide were used, and the most favorable isomeric resolution was obtained with a phenyl stationary phase. The chromatographic performance was better for chelates with trifluoroacetylacetone than for the corresponding chelates with thenoyltrifluoroacetone. Chromatographic peak area analysis of the metal chelates investigated showed appropriate isomeric concentrations in the final diastereomeric products resulting from the synthetic procedures.

📜 SIMILAR VOLUMES

Selective separation of cis-trans geomet
Selective separation of cis-trans geometrical isomers of β-carotene via CO2 supercritical fluid extraction
✍ Iris Gamlieli-Bonshtein; Eli Korin; Smadar Cohen 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 151 KB 👁 1 views

We investigated a novel method for the selective separation of beta-carotene isomers from a freeze-dried powder of the algae Dunaliella bardawil using supercritical fluid extraction. The separation method relies on the different dissolution rate of the 9Z and all-E isomers of beta-carotene in SC-CO(

Separation of oligo- and polysaccharides
Separation of oligo- and polysaccharides by capillary supercritical fluid chromatography
✍ Chester, T. L. ;Innis, D. P. 📂 Article 📅 1986 🏛 John Wiley and Sons 🌐 English ⚖ 277 KB

Direct analysis of polar solutes by supercritical fluid chromatography (SFC) has been somewhat limited because the mobile phases in common use are all relatively nonpolar. Derivatization is demonstrated as a viable means for facilitating the SFC separation of sugars. Oligo-and polysaccharides contai