multi-centre reaction [obsolete]
https://doi.org/10.1351/goldbook.M04043
A synonym for
pericyclic reaction
. The number of 'centres' is the number of atoms not bonded initially, between which single bonds are breaking or new bonds are formed in the transition state
. This number does not necessarily correspond to the ring size of the transition state
for the pericyclic reaction
. Thus, a Diels–Alder reaction is a 'four-centre reaction'. This terminology has largely been superseded by the more detailed one developed for the various pericyclic reactions.See:
cycloaddition
, pericyclic reaction
, sigmatropic rearrangement
, transition state