McLafferty rearrangement

From Mass Spec Terms
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DRAFT DEFINITION
McLafferty rearrangement

β Cleavage with concomitant specific transfer of a γ-hydrogen atom in a six-membered transition state in mono-unsaturated systems, irrespective of whether the rearrangement is formulated by a radical or an ionic mechanism, and irrespective of the position of the charge.

http://ch309c.chem.lsu.edu:16080/mswiki/images/2/2d/McLafferty_rearrangement.gif


Considered between 2004 and 2006 but not included in the 2006 PAC submission
This is an unofficial draft definition presented for information and comment.

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Orange Book Entry

This is an example of a rearrangement reaction and is defined as β - cleavage with concomitant specific transfer of a γ - hydrogen atom in a six-membered transition state in mono-unsaturated systems, irrespective of whether the rearrangement is formulated by a radical or by an ionic mechanism and irrespective of with which fragment the charge stays.

Gold Book Entry

β-Cleavage with concomitant specific transfer of a γ-hydrogen atom in a six-membered transition state in mono-unsaturated systems, irrespective of whether the rearrangement is formulated by a radical or an ionic mechanism, and irrespective of the position of the charge.

External Links

with figure:http://themerckindex.cambridgesoft.com/TheMerckIndex/NameReactions/3795307.gif