Bromination of the -CH_3 group in Toluene is achieved via Br_2 and light (hv) as

Question

Bromination of the -CH_3 group in Toluene is achieved via Br_2 and light (hv) as depicted below. Bromine is expensive ($4500/ton) and it is not profitable to make Benzyl Bromide ($3000/ton), since the reagent Bromine is more expensive than the product. Is the synthesis Green? Explain. No, you are spending those to make a product that is of lesser value Is the synthesis "atom-efficient"? No. In this reaction you are brominating CH_3 group to the product will be CH_2 Br. You are only using one atom of Br when you have two available to you

Explanation / Answer

A) The synthesis is green or not is decided by two factors :-

1) economic factor and

2) environmental factor.

Since environmentally the reaction is green as it doesnot produces any harmful gases(or substances)

Economically, the synthesis is expensive and hence it is not green.

B) The synthesis is atom efficient when you use tolune and bromine in the ratio 2:1 to react.

Related Questions

Navigate

• Browse (All)
• Browse B
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.