ERIC Number: EJ1073063
Record Type: Journal
Publication Date: 2015-Aug
Abstractor: As Provided
Reference Count: 13
Investigation of the Regioselectivity of Alkene Hydrations for the Undergraduate Organic Laboratory
Bichler, Katherine A.; Van Ornum, Scott G.; Franz, Margaret C.; Imhoff, Andrea M.
Journal of Chemical Education, v92 n8 p1426-1428 Aug 2015
Due to a lack of time and, thus, an inability to present every possibility in a chemical reaction, organic chemistry professors tend to present each reaction with a single outcome. In practice, this is clearly not the case. A first-semester, three-week laboratory experiment designed for undergraduate organic chemistry students is described in which students carry out the hydration of a monosubstituted alkene via two different reactions, a hydroboration/oxidation and an oxymercuration/demercuration, in the first two laboratory periods, and analyze the resulting product mixtures in the third week via gas chromatography (GC). Students gain hands-on experience with the GC instrument and compare the results of the two reaction types. Both reactions are carried out on the same alkene starting material, and the ratios of the primary alcohol (anti-Markovnikov) and secondary alcohol (Markovnikov) products formed in each reaction are calculated. Students write a formal report and discuss the regiochemistry of the reactions, identifying each reaction as either regiospecific or regioselective, depending upon their GC results and mechanistic interpretation.
Descriptors: Organic Chemistry, College Science, Undergraduate Students, Science Instruction, Laboratory Experiments, Science Experiments
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Postsecondary Education
Authoring Institution: N/A