Final answer:
To check if the synthesis strategy gives a substitution reaction with the expected regiochemistry and stereochemistry, draw the expected product of the forward reaction.
Step-by-step explanation:
In order to determine if a synthesis strategy gives a substitution reaction with the expected regiochemistry and stereochemistry, it is necessary to consider the chemical reaction and the structure of the reactants and products.
By drawing the expected product of the forward reaction, it becomes possible to assess whether the substitution reaction occurs as expected and whether the regiochemistry (placement of substituents) and stereochemistry (arrangement of atoms in space) are preserved.
For example, if a reactant is substituted with two bromine atoms, the expected product can be drawn based on the reaction mechanism and the known stereochemistry of the reactant.