Results 31 to 40 of about 3,741,215 (311)

Simultaneous Chiral Resolution of Two Racemic Compounds by Preferential Cocrystallization** [PDF]

Angewandte Chemie International Edition, 2021
Abstract We tap into an unexplored area of preferential crystallization, being the first to develop simultaneous chiral resolution of two racemic compounds by preferential cocrystallization. We highlight how the two racemic compounds RS ‐mandelic acid (MAN) and
Fuli Zhou, Oleksii Shemchuk, Maxime D. Charpentier, Chloé Matheys, Laurent Collard, Joop H. ter Horst, Tom Leyssens   +6 more
openaire   +4 more sources

(2S)-1,1-Dichloro-2-(2-chlorophenyl)-2-(4-chlorophenyl)ethane

Acta Crystallographica Section E, 2009
The title compound, C14H10Cl4, is easily crystallized while the other enantiomorph only forms an oil upon crystallization attempts. The title compound has a considerably higher density, ρ ≃ 1.562 Mg m−3 compared to the ...
Lars Eriksson, Tatiana Cantillana
doaj   +1 more source

Crystal structure and Hirshfeld surface analysis of new polymorph of racemic 2-phenylbutyramide

Acta Crystallographica Section E: Crystallographic Communications, 2019
A new polymorph of the title compound, C10H13NO, was obtained by recrystallization of the commercial product from a water/ethanol mixture (1:1 v/v). Crystals of the previously reported racemic and homochiral forms of 2-phenylbutyramide were grown from ...
Sergei Rigin, Beatrice Armijo, Arcadius V. Krivoshein, Marina Fonari, Tatiana Timofeeva   +4 more
doaj   +1 more source

LIV.—Existence of racemic compounds in the liquid state [PDF]

J. Chem. Soc., Trans., 1913
n ...
Mitchell, Alec Duncan, Smith, Clarence
openaire   +2 more sources

Characterization of the conglomerate form of acetyl-dl-leucine by thermal analysis and solubility measurements [PDF]

, 2012
Starting from a mixture of enantiomers in solution, crystallization can generate different types of crystals. In order to determine which type of crystal is obtained in the case of acetylleucine, an active pharmaceutical ingredient (API), analytical ...
B. Biscans, Pena, Richard, S. Teychené, Estime, Nicolas, Biscans, Béatrice, R. Pena, N. Estime, Teychené, Sébastien, Autret, Jean Marie, J.M. Autret   +9 more
core   +1 more source

(2RS,4′RS)-3′-(3-Chloro-4-methoxyphenyl)-4′-phenyl-4′H-spiro[indene-2,5′-isoxazol]-1(3H)-one ethanol monosolvate

Acta Crystallographica Section E, 2011
The title compound, C23H17ClN2O3·C2H6O, is the stoichiometric 1:1 ethanol solvate of a racemic reaction product, which forms a conglomerate. The refined Flack parameter of 0.36 (3) indicates racemic twinning.
Adil Boughaleb, Hafid Zouihri, Said Gmouh, Abdelali Kerbal, Mohamed El yazidi   +4 more
doaj   +1 more source

X-ray Crystallography at 170 K of Racemic 2,2'-Dimethoxy-9,9'-biacridine and 1H NMR Study of 2,2'-Diacetoxy-9,9'-biacridine

Molecules, 1999
Three derivatives of 9,9'-biacridine, 2,2'-dihydroxy, 2,2'-dimethoxy and 2,2'-diacetoxy have been prepared. The crystal structure of racemic 2,2'-dimethoxy-9,9'-biacridine CHCl3 1:1 complex has been determined and shows an almost perpendicular ...
Albert Virgili, José Elguero, Marta Fierros, Concepción Foces- Foces, Antonio L. Llamas-Saiz, Jean-Pierre Galy, Tuan Lormier, Gérard Boyer   +7 more
doaj   +1 more source

Crystallization of the Racemic Compound and Conglomerate of (RS)-2-Chloromandelic Acid [PDF]

, 2016
(RS)-2-Chloromandelic acid is a new example of chiral compounds that can exist as a racemic compound or a conglomerate depending on the crystallization conditions. Two polymorphic racemic compounds and one conglomerate were disclosed and characterized in
Sohrab Rohani (1755568), Quan He (646402), Hassan Gomaa (2247583), Jesse Zhu (2247586)   +3 more
core   +1 more source

Discovery of Flavonoids from Scutellaria baicalensis with Inhibitory Activity Against PCSK 9 Expression: Isolation, Synthesis and Their Biological Evaluation

Molecules, 2018
Nine flavonoids were isolated and identified from a chloroform-soluble fraction of the roots of Scutellaria baicalensis through a bioactivity-guided fractionation using a proprotein convertase subtilisin/kexin type 9 (PCSK9) monitoring assay in HepG2 ...
Piseth Nhoek, Hee-Sung Chae, Jagadeesh Nagarajappa Masagalli, Karabasappa Mailar, Pisey Pel, Young-Mi Kim, Won Jun Choi, Young-Won Chin   +7 more
doaj   +1 more source

Crystal structure and photoreactive behaviour of N,N-diisopropyl(p-phenylphenyl)glyoxylamide

Acta Crystallographica Section E: Crystallographic Communications, 2021
The title compound [systematic name: 2-([1,1′-biphenyl]-4-yl)-2-oxo-N,N-bis(propan-2-yl)acetamide], C20H23NO2 was synthesized and its photoreactive properties in the crystalline state and in acetonitrile solution were investigated.
Hisakazu Miyamoto, Hiroki Takahashi
doaj   +1 more source