Editing Group transfer reaction (section)

== Mechanism ==
A defining feature of the group transfer reaction is that it is a [[concerted reaction]], in which a bond is broken and formed in one step. The concerted reaction occurs due to the orbital overlap between the alkene and the allylic enophile.<ref name=":0" />  The electrons in the highest occupied molecular orbital ([[HOMO]]) of the ene are transferred to the lowest occupied molecular orbital ([[LUMO]]) of the enophile.<ref>{{Cite journal |last1=Inagaki |first1=Satoshi |last2=Fujimoto |first2=Hiroshi |last3=Fukui |first3=Kenichi |date=August 1976 |title=Orbital interaction in three systems |url=https://pubs.acs.org/doi/abs/10.1021/ja00432a001 |journal=Journal of the American Chemical Society |language=en |volume=98 |issue=16 |pages=4693–4701 |doi=10.1021/ja00432a001 |issn=0002-7863|url-access=subscription }}</ref>
[[File:Ene_reaction_orbitals_and_transition_state.svg|none|thumb|500x500px|''Figure 1''. The mechanism of the group transfer reaction is allowed by the orbital overlap of the HOMO of the ene and the LUMO of the enophile.]]