Analysis: Optical rotation, Enantiomeric excess, Diastereomeric excess, Chiral derivitizing agents This article or section does not adequately cite its references or sources. ... When polarized light is passed through a substance containing chiral molecules (or nonchiral molecules arranged asymmetrically), the direction of polarization can be changed. ... In chemistry two stereoisomers are said to be enantiomers if one can be superimposed on the mirror image of the other. ...

Chiral resolution: Crystallization, Kinetic resolution, Chiral column chromatography Chiral resolution in chemistry is a process for the separation of racemic compounds into their enantiomers [1]. Two common methods are: Derivatization of racemic compounds with optically pure reagents forming pairs of diastereomers which can be separated by conventional techniques in physical chemistry. ... Frost crystallization on a shrub. ...

Reactions: Asymmetric induction, Chiral reagents, Chiral pool synthesis, Chiral auxiliaries, Asymmetric catalytic reduction, Asymmetric catalytic oxidation, Organocatalysis, Biocatalysis Asymmetric induction in stereochemistry describes the preferential formation in a chemical reaction of one enantiomer or diastereoisomer over the other as a result of the influence of a chiral feature present in the substrate, reagent, catalyst or environment [1]. Asymmetric induction is a key element in asymmetric synthesis. ... Chiral pool synthesis is a strategy that aims to improve the efficiency of chiral synthesis. ... A chiral auxiliary is a chemical compound or unit that is temporarily incorporated into a organic synthesis so that it can be carried out asymmetrically with the selective formation of one of twoenantiomers. ... Proline-based CBS catalyst to reduce ketones William Standish Knowles ruthenium-based catalyst, similar to Wilkinsons catalyst, which reduces alkenes BINAP-based Noyori asymmetric hydrogenation catalysts which reduce ketones and alkenes      Concepts in asymmetric synthesis Analysis: Optical rotation, Enantiomeric excess, Diastereomeric excess, Chiral derivitizing agents Chiral resolution: Crystallization, Kinetic... Jacobsen epoxidation of alkenes using manganese-salen complex and NaOCl Sharpless epoxidation of allyl alcohols using Ti(O-iPr)4, diethyl tartrate, and t-butyl hydroxyperoxide Sharpless dihydroxylation of alkenes using dihydroquinine or dihydroquinidine ligands on an osmium metal center      Concepts in asymmetric synthesis Analysis: Optical rotation, Enantiomeric excess, Diastereomeric... Organocatalysis is the catalysis of chemical reactions using a purely organic compound. ... Biocatalysis can be defined as the utilization of natural catalysts, called enzymes, to perform chemical transformations on organic compounds. ...