Published January 3, 2000
| Version public
Journal Article
Femtosecond Dynamics of Norrish Type-II Reactions: Nonconcerted Hydrogen-Transfer and Diradical Intermediacy
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1.
California Institute of Technology
Abstract
Norrish type-II and McLafferty rearrangements, which both involve an intramolecular transfer of a γ H atom, can be differentiated on the femtosecond time scale. The McLafferty rearrangement results in ion fragmentation of the parent ketone, whereas the Norrish type-II reaction leads to a diradical species, which then either cyclizes or fragments (see scheme). For Norrish type-II reactions, the reaction time for the transfer of the hydrogen atom is within 70 – 90 fs, and the lifetime of the diradical intermediate is in the range of 400 – 700 ps at the total energy studied.
Additional Information
© 2000 Wiley-VCH Verlag GmbH, Weinheim, Fed. Rep. of Germany. Received: September 23, 1999. Version of Record online: 12 Jan 2000. This work was supported by the US Airforce Office of Scientific Research and Office of Naval Research. S.D.F., a postdoctoral fellow of the Fund for Scientific Research-Flanders, acknowledges a Fulbright scholarship and financial support by the Katholieke Universiteit Leuven and by Caltech.Additional details
Identifiers
- Eprint ID
- 69799
- Resolver ID
- CaltechAUTHORS:20160819-142156777
Funding
- Air Force Office of Scientific Research (AFOSR)
- Office of Naval Research (ONR)
- Fonds Wetenschappelijk Onderzoek - Vlaanderen (FWO)
- Fulbright Commission
- Katholieke Universiteit Leuven
- Caltech
Dates
- Created
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2016-08-22Created from EPrint's datestamp field
- Updated
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2021-11-11Created from EPrint's last_modified field