Acylhydrazone-based dynamic combinatorial libraries: study of the thermodynamic/kinetic evolution, configurational and coordination dynamics

The kinetic and thermodynamic selectivity of acylhydrazone formation in dynamic combinatorial libraries (DCL) is described. Competition reactions were generated from hydrazides: isoniazid, 4-nitro-benzohydrazide, 4-dimethylamino-benzohydrazide, and nicotinic hydrazide; as well as the aldehyde derivatives: benzaldehyde and 2-pyridine-carboxaldehyde. The obtained species and the distribution of the DCLs were monitored by 1H-NMR spectroscopy finding that those acylhydrazones containing the 4-dimethylamino-benzohydrazide are both the kinetic and thermodynamic product of their respective libraries. Configurational and coordination dynamics for some of these libraries were also investigated. The obtained results allowed the study of the redistribution of components and the amplification of one or more products using light and metal ions as physical and chemical templates, respectively.

• Autores: Gordillo Varela, Mónica Andrea; Zuluaga, Fabio; Chaur Valencia, Manuel Noé
• Tipo de recurso: Article of journal
• Fecha de publicación: 2016
• Institución: Universidad Nacional de Colombia
• Repositorio: Universidad Nacional de Colombia
• Idioma: spa
• OAI Identifier: oai:repositorio.unal.edu.co:unal/66282
• Acceso en línea: https://repositorio.unal.edu.co/handle/unal/66282; http://bdigital.unal.edu.co/67306/
• Palabra clave: 54 Química y ciencias afines / Chemistry; dynamic combinatorial chemistry; acylhydrazones; coordination and configurational dynamics; librerías combinatorias dinámicas; acil-hidrazonas; dinámicas de coordinación y configuración
• Rights: openAccess
• License: Atribución-NoComercial 4.0 Internacional