ERIC Number: EJ1032436
Record Type: Journal
Publication Date: 2014-Jun
Abstractor: As Provided
Reference Count: N/A
Scent Transmutation: A New Way to Teach on Chemical Equilibrium, Distillation, and Dynamic Combinatorial Chemistry
Ji, Qing; El-Hamdi, Nadia S.; Miljanic´, Ognjen S?.
Journal of Chemical Education, v91 n6 p830-833 Jun 2014
Esters are volatile and pleasantly smelling compounds, commonly used as food additives. Using Ti(OBu)[subscript 4]-catalyzed acyl exchange, we demonstrate a scent transmutation experiment, in which two fragrant esters swap their acyl and alkoxy substituents and are, during the course of a reactive distillation, quantitatively converted into two different esters with distinct fragrance properties. We view this simple and appealing experiment as highly suitable for instructional use, since it can be used to teach the concepts of chemical equilibrium, distillation, transesterification, dynamic combinatorial chemistry, and the industrially relevant process of reactive distillation.
Descriptors: Science Experiments, Olfactory Perception, Science Instruction, College Science, Undergraduate Study, Laboratory Procedures, Spectroscopy, Organic Chemistry, Hands on Science, Chemistry
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: firstname.lastname@example.org; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Postsecondary Education
Authoring Institution: N/A