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Saba, Shahrokh; Corozo-Morales, Ariel – Journal of Chemical Education, 2019
A pedagogically useful undergraduate organic-chemistry-laboratory experiment has been developed that involves the synthesis of two structurally simple, achiral "O,O"- and "N,N"-acetal substrates with no stereocenters. The experiment introduces students to a "new" and more effective variant of classical acetal…
Descriptors: Undergraduate Students, Undergraduate Study, Organic Chemistry, Laboratory Experiments
Saba, Shahrokh; Ciaccio, James A.; McMann, Lauren; Tariverdieva, Tamilla – Journal of Chemical Education, 2020
A discovery-based undergraduate organic chemistry lab experiment has been developed in which students establish the diastereoselectivity of hydride reduction of the a-chiral ketone (±)-benzoin isopropyl ether to erythro and threo diastereomeric alcohols by two different reducing agents. Students achieve this goal by working collaboratively and…
Descriptors: Spectroscopy, Science Laboratories, Laboratory Experiments, Undergraduate Students
Saba, Shahrokh; Cagino, Kristen; Bennett, Caitlin – Journal of Chemical Education, 2015
A pedagogically useful discovery-based undergraduate organic chemistry lab experiment probing the chemo- and diastereoselectivity in the NaBH[subscript 4] reduction of two chiral ketoesters (benzoin acetate and benzoin benzoate) has been developed. This experiment complements a previously described and highly popular discovery-based experiment…
Descriptors: Spectroscopy, Science Instruction, Organic Chemistry, College Science
Saba, Shahrokh; Clarke, Donald D.; Iwanoski, Christa; Lobasso, Thomas – Journal of Chemical Education, 2010
This undergraduate organic laboratory experiment complements previously described and popular experiments on hydration of 1-hexene where students experimentally establish the Markovnikov regioselectivity of alkene hydration. In this experiment, students explore not only the regiochemistry but also the stereochemistry of 1-hexene hydration and…
Descriptors: Chemistry, Laboratory Experiments, College Science, Undergraduate Study
Saba, Shahrokh; Ciaccio, James A.; Espinal, Jennifer; Aman, Courtney E. – Journal of Chemical Education, 2007
The stereochemical investigation is conducted to give students the combined experience of chemical synthesis of amines and N-heterocycles and structural stereochemical analysis using NMR spectroscopy. Students are introduced to the concept of topicity-stereochemical relationships between ligands within a molecule by synthesizing N,O-acetals.
Descriptors: Chemistry, Spectroscopy, Science Instruction, Science Experiments