Results 171 to 180 of about 3,131,133 (230)

Racemic compound formation-conglomerate formation

Journal of Thermal Analysis, 1997
Katalin Nemák, M. Ács, D. Kozma, E. Fogassy   +3 more
semanticscholar   +2 more sources

Synthesis of Racemic Brevioxime and Related Model Compounds

The Journal of Organic Chemistry, 2000
The synthesis, in racemic form, of the insect juvenile hormone inhibitor brevioxime (1) is described, as well as exploratory studies that led to the related model compounds 14 and 15a. The route to 1 involves Ag(+)-mediated coupling of the amine derived from 20 with the beta-keto thioester 32.
D L, Clive, S, Hisaindee
openaire   +2 more sources

Application of Direct Crystallization for Racemic Compound Propranolol Hydrochloride

Journal of Pharmaceutical Sciences, 2007
The application of direct crystallization integrating with chromatography to the resolution of a racemic compound propranolol hydrochloride was studied and the crystallization progression was clearly illustrated in terms of the diagram of solubility and metastable zone widths with different enantiomeric compositions.
Wang, X., Lu, J., Chi, B.C.
openaire   +2 more sources

Enzymatic Synthesis of Chiral, Non-Racemic Phosphoryl Compounds

Phosphorus, Sulfur, and Silicon and the Related Elements, 1996
Abstract: A series of phosphinyl-, phosphonyl- and phosphorylacetates was hydrolyzed in the presence of Pig Liver Esterase (PLE) to give the corresponding P-chiral phosphoroacetic acids and unreacted esters in a high enantiomeric purity (up to 100% ee).
Piotr KieŁbasinski, Marian MikoŁajczyk
openaire   +1 more source

Chromatographic resolution of racemic organotin and -germanium compounds

Journal of Organometallic Chemistry, 1980
Abstract Seven racemic organotin and −germanium compounds have been partially resolved by inclusion chromatography on microcrystalline cellulose triacetate.
Gielen, Marcel, Vanden Eynde, I.
openaire   +1 more source

Partially Racemic Compounds as Brushtail Possum Urinary Metabolites

Australian Journal of Chemistry, 1992
The hydroxycineole (2) and cineolic acid (3) obtained as urinary metabolites from the brushtail possum (Trichosurus vulpecula) after the ingestion of l,8-cineole (1), are partial racemates. The compounds have been examined by gas chromatographic analysis over chiral stationary phases, and by the synthesis of optically pure enantiomers.
RM Carman, KD Klika
openaire   +2 more sources

A Racemic Compound of α-Helical Polypeptide

Journal of the American Chemical Society, 1962
T. Yoshida, Setsuji Sakurai, T. Okuda, Y. Takagi   +3 more
semanticscholar   +2 more sources

Efficient preparation of chiral non-racemic sulfur compounds

Canadian Journal of Chemistry, 2007
p-Menthane-3-carboxaldehyde serves as an efficient chiral auxiliary in the preparation of chiral non-racemic S-alkylthiocarbamates or S-dithiocarbonates via the 3,3-sigmatropic rearrangement of the corresponding alkylthionocarbamates or xanthates.
Joannie Minville, Mélina Girardin, Claude Spino   +2 more
openaire   +1 more source

Sequential Amplification of Amino Acid Enantiomeric Excess by Conglomerate and Racemic Compound: Plausible Prebiotic Route Towards Homochirality

Origins of Life and Evolution of Biospheres, 2023
A. Sharma
semanticscholar   +1 more source

Phenomenon of Optical Self-Purification of Chiral Non-Racemic Compounds

Journal of the American Chemical Society, 2007
Owing to a faster rate of sublimation of the racemic form as compared to the optically pure form, optical purification occurred without any external action or special environmental condition. We believe that the phenomenon of optical self-purification reported here deserves further systematic study as possibly one of the mechanisms leading to the ...
Vadim A, Soloshonok, Hisanori, Ueki, Manabu, Yasumoto, Shekar, Mekala, Jennifer S, Hirschi, Daniel A, Singleton   +5 more
openaire   +2 more sources