133k views
3 votes
When HCl is reacted with 1,3-butadiene at room temperature, which product will be in higher yield?

A. 1,4-Addition product
B. 1,2-Addition product
C. Polymer
D. Elimination product

User Sumita
by
7.8k points

1 Answer

6 votes

Final answer:

At room temperature, 1,3-butadiene reacts with HCl to give the 1,4-Addition product in higher yield due to the stability of the intermediate carbocation formed in this reaction. The option (A) is correct.

Step-by-step explanation:

When HCl is reacted with 1,3-butadiene at room temperature, the product with a higher yield is the 1,4-addition product. This is because, in the presence of a polar protic acid like HCl, 1,3-butadiene typically undergoes conjugate addition (also known as 1,4-addition).

This reaction leads to the formation of a more stable secondary carbocation intermediate which can then react with a chloride ion to give the 1,4-addition product. The 1,2-addition product, which involves the formation of a less stable primary carbocation, is formed as well, but with a lower yield compared to the 1,4-addition product at room temperature. At higher temperatures, the 1,2-addition product could predominate due to kinetic control. Therefore, option (A) is correct.

User Wlixcc
by
6.8k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.