Where a lone pair through the nucleophile overlaps With all the sigma* orbital of the leaving team. Even so, this stage does not have the similar sensitivity to steric hindrance since the SN2 reaction, as we've been going to see. The predominance of allylic substitution more than other positions is https://solutiondebromoforme69369.blogofchange.com/38351726/detailed-notes-on-bromazolam-in-pg