PPT-Stereochemistry

Arrangements of Atoms in 3d Space Stereochemistry Stereochemistry The study of the threedimensional structures of molecules particularly stereoisomers Structural isomers Have the same . Enantiomers stereoisomers whose molecules are nonsuperposable mirror images 2 Diastereomers stereoisomers whose molecules are not mirror images of each other Example cis and trans double bond isomers Example cis and trans cycloalkane isomers Two t Dr. Clower. CHEM 2411. Spring 2014. McMurry. (8. th. ed.) sections . 5.1-5.12, 7.5. Stereochemistry. Branch of chemistry concerned with the 3D arrangement of atoms in molecules. Stereoisomers:. Same molecular formula. Subunits (building blocks) of peptides and proteins. Neurotransmitters. Metabolic intermediates. glutamate. γ. -. aminobutyric. acid. (GABA). Proteins are synthesized from 20 ‘standard’ . α. -amino acids. Their names have 3- and 1-letter abbreviations.. 5-7. The radical mechanism explains why the bromination of butane results in a racemate.. When a hydrogen atom is extracted from butane by an attacking bromine atom, it does not matter which hydrogen is extracted, an achiral planar sp. Isomerism. Isomerism. is the phenomenon whereby certain compounds, with the same molecular formula, exist in different forms owing to their different organizations of atoms. The concept of isomerism illustrates the fundamental importance of molecular structure and shape in organic chemistry.. What is the relationship between R,S and . d,l. aka (±)?. There isn’t any!. Interaction with plane polarized light. Nomenclature. All . Isomers . (same molecular formula). Identical. . Enantiomers. . H—. O. H. C. C. +. O. H. C. C. H. Acid-Catalyzed Hydration of Alkenes. reaction is acid catalyzed; typical hydration medium is 50% H. 2. SO. 4. -50% H. 2. O. Follows Markovnikov's Rule. H. ydrohalogenation. Subunits (building blocks) of peptides and proteins. Neurotransmitters. Metabolic intermediates. glutamate. γ. -. aminobutyric. acid. (GABA). Proteins are synthesized from 20 ‘standard’ . α. -amino acids. Their names have 3- and 1-letter abbreviations.. Paper No. 1: ORGANIC CHEMISTRY - I (Nature of Bonding and Stereochemistry) Module 1 3 : Cyclodextrins Part - I Know More Glossary C Cyclodextrins: Cyclodextrins (sometimes called cycloamyloses ) are Chirality, Isomerism, & Stereoisomerism. Lecture No.. 1. What is the difference between an enantiomer and a diastereomer?. Enantiomers and diastereomers are two types of stereoisomers. Enantiomers include mirror images and non-superimposable chiral centers. Diastereomers contain non-superimposable chiral centers, but are not mirror images. Depending on the number of stereocenters, there could be far more than 2 compounds.. . Dr. Geeta Singh. Assistant Professor. Department of Chemistry. D.D.U. Gorakhpur University, Gorakhpur. 1. . Introduction. Pinacol-Pinacolone Reaction. Mechanism of Pinacol-Pinacolone Reaction. Examples of Pinacol-Pinacolone Reaction. Since the nature of . nitogen. in . Tropine. was found as tertiary, so there should be an ester linkage.. Structure determination of Atropine. DBEs = 7. Structure determination of Tropic acid. Functional group test: DBEs = 5. Asymmetric carbons. Stereoisomers. R,S nomenclature. Racemic mixtures. Fischer projection. Naming Monosaccharides. Named on the basis of. . Functional groups. Ketone carbonyl =. . ketose. Aldehyde carbonyl =. Chapter 5. 1. Isomerism. Isomers. . are different compounds that have the same molecular formula.. Constitutional isomers . are isomers that differ because their atoms are connected in a different order..