7.1 Preparation of Alkenes: A Preview of Elimination Reactions
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Diels-Alder Visualization Several computer animations of a Diels-Alder reaction that were created as an undergraduate student project are presented.
Addition Reactions |
Alkenes
Addition Reactions of Alkenes The Diels-Alder reaction, addition of oxygen to tetrakis(N, N-dimethylamino) ethylene, polymerization of ethylene, and addition of iodine to a-pinene are demonstrated. Molecular models of ethene are shown.
The Iodochlorination of Styrene: An Experiment That Makes a DifferenceR. Gary Amiet and Sylvia Urban This purpose of this laboratory exercise is to determine the various substitution and elimination products generated in the iodochlorination of styrene and their relative proportions through the application of mechanistic principles and a basic knowledge of GCMS and NMR. Amiet, R. Gary; Urban, Sylvia. J. Chem. Educ.2008, 85, 962.
Alkenes |
Constitutional Isomers |
Gas Chromatography |
Instrumental Methods |
Mass Spectrometry |
Mechanisms of Reactions |
NMR Spectroscopy |
Synthesis |
Student-Centered Learning
Stereospecific Synthesis of the Geometrical Isomers of a Natural ProductT. Grove, D. DiLella, and E. Volker Presents an experiment for the synthesis of (Z) and (E) isomers that is presented to students as a puzzle in which they must determine the identity of the major component in anise oil. A necessary part of the analysis is the preparation the (E) and (Z) isomers of anethole. Molecular modeling is used to explore the conformation of and energy difference between isomers. Grove, T.; DiLella, D.; Volker, E. J. Chem. Educ.2006, 83, 1055.
Alkenes |
Computational Chemistry |
Gas Chromatography |
IR Spectroscopy |
NMR Spectroscopy |
Stereochemistry |
Synthesis
Fractional Distillation and GC Analysis of Hydrocarbon MixturesCraig J. Donahue Separating and identifying the components of a three-hydrocarbon mixture through fractional distillation and gas chromatography. Donahue, Craig J. J. Chem. Educ.2002, 79, 721.
