Reactions and Atom Economy
Atom Economy = (RFM of useful product) / (RFM of reactants used) x 100
Reorganises the constituent atoms within a molecule, none are lost so is 100% atom economical
Reactants are added together, no atoms lost = 100% atom economical
The leaving group is not incorporated in the final product = atom economy always <100%
Remove a group from a molecule, so there will alos be another product as well as the useful product = always <100% atom economical. Least economical.
Condensation = addition then eilmination