A new mechanism for internal nucleophilic substitution reactions

This is the authors' abstract. We don't add key points for this paper.

form a molecular complex. The final syn-addition of HCl to the olefin leads to alkyl chloride with the retention of configuration. For tertiary substrates, a variation of the previous mechanism is postulated with the intervention of contact ion pairs. It is of great importance to emphasize that this new mechanism is able to explain some experimental observations such as the presence of olefins in these types of reactions and the low reactivity of some systems such as neopentyl chlorosulfite. Our results pave the way to a new mechanistic perspective in similar reactions which will need further studies and validation.