Kinetics and Mechanism of the Aminolysis of Aryl Dithiocyclopentanecarboxylates in Acetonitrile

摘要

The two common mechanisms for the aminolysis of carbonyl,I,and thiocarbonyl,II,esters and carbonates are(i)concerted through a tetrahedral transition state(TS)and(ii)stepwise through a tetrahedral intermediate.The latter reaction pathway can be described by eq.(1),where R and L are nonleaving and leaving groups,and N represents an amine and Y is either O(I)or S(II).