NMR analysis of Nile Blue (C. I. Basic Blue 12) and Thionine (C. I. 52000) in solution [PDF]
The dyes Nile Blue (C. I. Basic Blue 12, NB) and Thionine (C. I. 52000, TH) were examined in both ionic and neutral forms in different solvents using NMR and UV-visible Spectroscopy to firmly establish the structures of the molecules and to assess the ...
Evstigneev, Maxim P. +5 more
core +1 more source
A solution NMR approach to determine the chemical structures of carbohydrates using the hydroxyl groups as starting points [PDF]
An efficient NMR approach is described for determining the chemical structures of the monosaccharide glucose and four disaccharides, namely, nigerose, gentiobiose, leucrose and isomaltulose.
Bauer, Julia +3 more
core +2 more sources
A metabolomic approach to animal vitreous humor topographical composition: A pilot study [PDF]
The purpose of this study was to evaluate the feasibility of a 1H-NMR-based metabolomic approach to explore the metabolomic signature of different topographical areas of vitreous humor (VH) in an animal model.
ATZORI, LUIGI +8 more
core +1 more source
Summary: In situ, direct 1H NMR chiral analysis by using chiral solvating agents is a convenient and efficient analytical technique. Here we developed a Ga-based chiral anionic metal complex for 1H NMR chiral analysis of alcohols.
Sumin Jang, Hyunwoo Kim
doaj +1 more source
An inter-laboratory comparison demonstrates that [H-1]-NMR metabolite fingerprinting is a robust technique for collaborative plant metabolomic data collection. [PDF]
In any metabolomics experiment, robustness and reproducibility of data collection is of vital importance. These become more important in collaborative studies where data is to be collected on multiple instruments.
Ward, J.L. +13 more
core +3 more sources
¹³C NMR metabolomics: applications at natural abundance. [PDF]
(13)C NMR has many advantages for a metabolomics study, including a large spectral dispersion, narrow singlets at natural abundance, and a direct measure of the backbone structures of metabolites.
Clendinen, Chaevien +7 more
core +3 more sources
Synthesis of Optically Active Bifunctional Building Blocks through Enantioselective Copper-Catalyzed Allylic Alkylation Using Grignard Reagents [PDF]
Enantioselective copper-catalyzed allylic alkylations were performed on allylic bromides with a protected hydroxyl or amine functional group using several Grignard reagents and Taniaphos L1 as a ligand.
Feringa, Ben L., +3 more
core +1 more source
A Versatile Ligand Platform that Supports Lewis Acid Promoted Migratory Insertion [PDF]
A helping hand: Incorporation of Group 2 Lewis acids into a macrocycle appended to a phosphine ligand attached to a rhenium carbonyl complex promotes otherwise unfavorable transformations of coordinated CO (see scheme; M=Ca, Sr).
Bercaw, John E. +2 more
core +1 more source
Spectral Analysis of Glucose-Based Chiral N-heterocyclic Carbene Precursors
1-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-3-butylimidazolium bromide (compound 2) was synthesized with 1-bromobutane and 1-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl) imidazole (compound 1), which is a glucose-derived chiral N-heterocyclic carbene ...
ZHOU Zhong-gao +4 more
doaj +1 more source
NMR analysis of (1S, 1aR, 6aR)-2’, 3’, 6, 6a-tetrahydrospiro cycloprop a indene-1(1aH), 1’- 1H indene [PDF]
The aldol condensation product of 1H-indan-1-one, (2E)-2-(2,3-dihydro-1H-in den-1-ylidene)-2,3-dihydro-1H-inden-1-one, subjected to Huang–Minlon reduction conditions was shown, via 1D and 2D NMR analysis, to be a mixture of (1S,1aR,6aR)-2’,3’,6,6a ...
Spiteller Peter +2 more
doaj +1 more source

