Question

1.) which metric, atom economy or e factor, is more important for accessing the greenest procedure?

Answer 1

Atom economy is a measure to understand whether all the reactants that we have used took part in the product formation or not.

In the Diels Alder reaction, dienophile and diene get added to produce a single product called adduct. In this every atom of reactnat A and rectant B are used all can be seen in the product as well. Therefore, the atom economy of this reaction is said to be 100%

Atom economy as a method by which organic chemists would pursue “greener” chemistry. The simple definition of atom economy is a calculation of how much of the reactants remain in the final product. This is shown below:

For a generic multi-stage reaction:

1. A + B → C
2. C + D → E
3. E + F → G

Atom economy = m.w. of G × 100 / Σ (m.w. A,B,D,F)

This is very important to make process green because, more the atom economy, less the watse produced is. Therefore, isolation of the desired product, production cost is very less. Furthermore, subsequent waste treatment is not necessary .Hence it would agree with most of the green chemistry principles