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Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
Una alternativa mecanicista para la hidroboración intramolecular de complejos homoalílicos de amina y fosfina borano
Matthew Scheideman1, Peter Shapland, Edwin Vedejs
1Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, USA.
Journal of the American Chemical Society
|August 28, 2003
Resumen
El yodo activa las aminas boranas homoalílicas para la hidroboración intramolecular. Este proceso catalítico forma un intermediario B-iodoborano, lo que permite una síntesis eficiente del producto de hidroboración.
Área de la Ciencia:
- Química orgánica es la química orgánica.
- Química del organoborón Química del organoborón
Sus antecedentes:
- La hidroboración intramolecular es una transformación sintética clave.
- La activación de los boranos es crucial para la reactividad.
Objetivo del estudio:
- Desarrollar un nuevo método para la hidroboración intramolecular de boranos de aminas homoalílicos.
- Investigar el papel del yodo como activador en este proceso.
Principales métodos:
- Reacción de los boranos aminados homoalílicos con el yodo.
- Análisis de los intermedios y productos de reacción utilizando métodos espectroscópicos.
Principales resultados:
- Demostración exitosa de la hidroboración intramolecular catalizada por yodo.
- Identificación de un complejo de B-iodoborano como un intermediario clave.
- Mecanismo propuesto que implica la formación de un complejo pi de borano-alqueno catiónico.
Conclusiones:
- Las cantidades catalíticas de yodo promueven eficientemente la hidroboración intramolecular de los boranos de aminas homoalílicos.
- La reacción procede a través de un nuevo intermediario B-iodoborano.
- Este método ofrece una nueva ruta a los productos de hidroboración.
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