The retention behavior of N-trifluoroacetyl-0-alkyl esters of selected amino acids with various types of alkyls in ester group was studied by capillary gas chromatography with modified cyclodextrin stationary phases. A model set of six different esters of five amino acids was analyzed on two columns
Influence of structure and polarity of polysiloxanes on retention of N-TFA butyl esters of amino acids
✍ Scribed by Boudah, Fawzia ;Abdeddaim, Khélifa ;Guermouche, Moulay-Hassane
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- English
- Weight
- 174 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0935-6304
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
In this work, we have investigated the influence of the polarities and structures of 13 polysiloxanes on the retention of some N‐TFA N‐butyl esters of amino acids. Gehrke [1] was the first to examine the possible relationship between polarity and retention data of amino acid derivatives for 9 stationary liquid phases. He concluded that the molecular structure of the stationary liquid phase is an important factor determining retention.
📜 SIMILAR VOLUMES
Certain crystallographic features, such as the existence of slip planes, can greatly facilitate the ability of crystals to deform plastically. An investigation of the relationship between the slip planes and the tableting performance of the crystals of methyl, ethyl, n-propyl, and n-butyl 4-hydroxyb
## Abstract This paper describes the synthesis and structural studies of __N__‐(__p__‐toluenesulfonyl)‐amino acid 3,5‐di‐__tert__‐butyl‐2‐phenolamides by ^1^H, ^13^C, and ^15^N. The presence of __intra__‐ and __inter__molecular hydrogen bonds were studied by variable temperature NMR spectroscopy. T
The methods of synthesis, elemental analysis, IR and NMR spectroscopic data and fungicidal activity against Ceratocystis ulmi are reported for a series of triorganotin esters of N-arylideneo-amino acids of general formula R 3 SnO-CO(CH 2 ) n N = CHAr (R = Ph, n-Bu; Ar = 2-HOC 6 H 4 , 2-HOC 10 H 6 ;