`CH≡CH underset(H_2 SO_4 ) overset(H_2 SO_4)to underset(H_2 O) overset(CH_3 Mg Br ) to overset(P //Br_2)to`

Options

A. `CH_3 CH (Br) CH_3`
B. `CH_3 CH_2 CH_2Br`
C. `CH_2=CH-Br`
D. `BrCH=CH-CH_3`

Answer

A

Explanation

`CH -= CH underset( H_2 SO_4) overset( HgSO_4)to CH_3 CHO overset( CH_3 MgBr)to`
` CH_3 - underset(H) underset(| ) overset(OMgBr) overset(| ) C-CH_3 overset(H_2O) to CH_3 - underset(CH_3) underset(|) overset(OH) overset(| ) C-H overset(P//Br_2)to CH_3 - underset( CH_3) underset(|)overset(Br) overset(| ) C-H`