ERIC Number: EJ1452284
Record Type: Journal
Publication Date: 2024-Jan
Pages: 4
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0021-9584
EISSN: EISSN-1938-1328
Intrusive Learning Accompanying Knowledge Transfer during Organic Chemistry Laboratory Experiment: Synthesis, Characterization, and Photoisomerization of [alpha]-Cyanostilbenes
Pramod Kumar; Biplab Maji
Journal of Chemical Education, v101 n1 p120-123 2024
Discussion-based outcomes of organic chemistry laboratory experiments form a powerful tool to create a learning environment, facilitate teamwork, and build scientific skills and analytical ability for undergraduate science students. A Knoevenagel-type condensation reaction was selected to demonstrate these results by taking phenylacetonitrile and four different aldehydes as reactants to form a-cyanostilbenes. The reactions were performed under almost neat conditions open to air at room temperature. The short duration (2-20 min) and visual solid product formation also make the experiment attractive. Melting points, TLC, FTIR, UV-vis, and GC-MS were utilized to characterize and check the purity of the products. Photoisomerization studies were performed in sunlight. Substituent effects in the IR stretching frequency, UV-vis spectra, and photoisomerization behavior create a platform for group discussion and knowledge transfer.
Descriptors: Organic Chemistry, Science Laboratories, Science Experiments, Laboratory Experiments, Science Instruction, Discussion (Teaching Technique), Group Discussion
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: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A