Results 41 to 50 of about 158,943 (323)
Resolução do ibuprofeno: um projeto para disciplina de química orgânica experimental
Química Nova, 2012 A practical and didactic sequence of experiments was proposed to illustrate the stereochemistry concept, optically active compounds, resolution of racemates, and use of the NMR technique, including 2D-COSY for identification of organic compounds, on a ...
Adriano L. Romero +3 more
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Stereochemistry of Organic Compounds
, 1962 Structure Stereoisomers Symmetry Configuration Properties of Stereoisomers: Stereoisomer Discrimination Separation of Stereoisomers, Resolution, Racemization Heterotopic Ligands and Faces (Prostereoisomerism, Prochirality) Stereochemistry of Alkenes ...
E. Eliel, S. Wilen, L. Mander
semanticscholar +1 more source
The Stereochemistry of Ketoreduction [PDF]
Chemistry & Biology, 2005 In this issue of Chemistry & Biology, Leadlay and coworkers report overproduction of a number of ketoreductase domains from modular polyketide synthases. These discrete enzymes allow the stereochemistry of polyketide ketoreduction to be studied in isolation.
openaire +3 more sources
Chiral Discrimination in Helicity-Preserving Fabry-Pérot Cavities [PDF]
Phys. Rev. A 107, L021501 (2023), 2022 We theoretically study circular dichroism of chiral molecules embedded inside a helicity-preserving Fabry-P\'erot cavity. We find an increase of the intrinsic chiroptical response of the molecules by 2 orders of magnitude and report the first clear signature of chiral cavity polaritons upon entering the regime of strong light-matter coupling.
arxiv +1 more source
Quiralidade em moléculas e cristais Chirality at molecules and crystals
Química Nova, 2009 The present contribution describes some concepts of stereochemistry and chirality in molecules and crystals. This paper also reports on the development of a simple and fast experiment to prepare and recognize conglomerate and true racemate of tartaric ...
Ayres Guimarães Dias +1 more
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The Stereochemistry of Indigo. [PDF]
Journal of the American Chemical Society, 1908 n ...
Falk, K. George, Nelson, J. M.
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Two Metals Are Better Than One in the Gold Catalyzed Oxidative Heteroarylation of Alkenes [PDF]
, 2011 We present a detailed study of the mechanism for oxidative heteroarylation, based on DFT calculations and experimental observations. We propose binuclear Au(II)–Au(II) complexes to be key intermediates in the mechanism for gold catalyzed oxidative ...
Benitez, Diego +4 more
core +2 more sources
Direct CP Violation in Untagged B-Meson Decays [PDF]
Phys.Lett.B553:261-266,2003, 2002 Direct CP violation can exist in untagged, neutral B-meson decays to certain self-conjugate, hadronic final states. It can occur if the resonances which appear therein permit the identification of distinct, CP-conjugate states -- in analogy to stereochemistry, we term such states ``CP-enantiomers.'' These states permit the construction of a CP-odd ...
arxiv +1 more source
Applied Sciences, 2019 The present survey concentrates on pharmacodynamics and pharmacokinetics of selected β-adrenergic blockers from the point of view of their stereochemistry. It could be shown that the activity in the arylaminoethanol and aryloxyaminopropanol group of
Ružena Čižmáriková +3 more
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Chemistry, Cyclophosphamide, Cancer Chemotherapy, and Serendipity: Sixty Years On
Substantia, 2021 Cambridge Dictionary: serendipity | noun | the phenomenon of finding interesting or valuable things by chance. The year 2019 marked the 60th anniversary of the approval of cyclophosphamide (CP) as an anticancer by the U.S.
Gerald Zon
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