The preference for anti over gauche migration in the Baeyer-Villiger reaction
Journal of Organic Chemistry, ISSN: 0022-3263, Vol: 69, Issue: 21, Page: 7148-7156
2004
- 25Citations
- 21Captures
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Metrics Details
- Citations25
- Citation Indexes25
- 25
- CrossRef24
- Captures21
- Readers21
- 21
Article Description
Explanations for stereoselectivity in the Baeyer-Villiger reaction have relied on the assumption that the antiperiplanar (app) group migrates. However, the magnitude of the preference for app-migration over gauche migration is unknown. To investigate this, the energy differences between the two were estimated from ab initio calculations. App-migration was found to be the preferred pathway since no transition structure could be located for gauche migration. Barriers for gauche migration were estimated by performing constrained optimizations. App-migration was found to be strongly favored with a barrier that is at least 3.8 kcal/mol and as much as 58.0 kcal/mol lower in energy than the gauche migration barrier.
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