Stepwise reaction

A stepwise reaction is a chemical reaction with one or more reaction intermediates and involving at least two consecutive elementary reactions. A stepwise reaction is a chemical reaction with one or more reaction intermediates and involving at least two consecutive elementary reactions. In a stepwise reaction, not all bonds are broken and formed at the same time. Hence, intermediates appear in the reaction pathway going from the reactants to the products. A stepwise reaction distinguishes itself from an elementary reaction in which the transformation is assumed to occur in a single step and to pass through a single transition state.