Question

What is the product of 1, 4-addition in the reaction shown below ?

Ph–CH=CH–CH=CH–Ph $\xrightarrow { \mathrm { HBr } }$

• A. Ph–CH2–CH=CH–CH Br–Ph
• B. Ph–CH2–CH Br–CH=CH–Ph
• C. CH2–CH=CH–CH2Br
• D. CH2–CH=CH–CH2

Answer 1

Answer: (A)

Ph–CH2–CH=CH–CH Br–Ph

Answer 2

$\xrightarrow { \mathrm { HBr } }$ Ph–CH2–CH=CH––Ph