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Facultad de Química, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx
Barrientos, Claudio, et al. (2024). A teaching strategy for teaching stereochemistry: a proposal for converting from one representation to another. Educación Química; Vol. 35 Núm. 4, 2024; 89-98. Recuperado de https://repositorio.unam.mx/contenidos/4159046
Autor(es)
Barrientos, Claudio; Moris, Silvana; Gutiérrez López, Javiera
Tipo
Artículo de Investigación
Área del conocimiento
Biología y Química
Título
A teaching strategy for teaching stereochemistry: a proposal for converting from one representation to another
Fecha
2024-10-29
Resumen
The objective of this study was to develop a proposal for the teaching of stereochemistry to university chemistry and pharmacy students. The aim was to identify the representations of organic structures that are easiest for the students, using a didactic strategy for the identification, assignment of the absolute configuration and understanding of stereochemistry in the study of the stereochemistry of organic compounds. A scheme comprising different representations was presented to the students, with the relationships between them explained. This was done to facilitate interconversion and enable the students to correctly assign the configurations of the stereocentres. A pre-test was applied before the intervention, which involved Fischer projections, wedge and line formulas, Haworth and chair formulas. The results showed that only in Fischer projections and wedge and line formulas were the students able to assign the absolute configurations of the stereocentres. However, following the intervention, the students demonstrated the ability to perform interconversions in the Haworth and chair representations, resulting in an improvement in their performance from 0% to 65% and from 0% to 52.5%, respectively, in the case of wedges and lines the increase was from 22.2% to 60%, and from 81.3% to 100% for Fischer representations, indicating that the Fischer projection was the simplest representation for the assignment of the absolute configuration of the stereocentres.
Tema
Organic Chemistry; Chemistry Didactics; University Teaching; Organic projection; Stereochemistry; Química orgánica; Didáctica de la química; Enseñanza universitaria; Proyección orgánica; Estereoquímica
Idioma
spa
ISSN
ISSN electrónico: 1870-8404; ISSN impreso: 0187-893X
