CBSE Class 11-science Answered
sir,can you explain the mechanism of electrophilic substitution of benzene?
Asked by | 16 Feb, 2012, 12:03: PM
Expert Answer
The first stage
Suppose the electrophile is a positive ion X+.
Two of the electrons in the delocalised system are attracted towards the X+ and form a bond with it. This has the effect of breaking the delocalisation, although not completely.
The second stage
A lone pair of electrons on Y- forms a bond with the hydrogen atom at the top of the ring. That means that the pair of electrons joining the hydrogen onto the ring aren't needed any more. These then move down to plug the gap in the delocalised electrons, so restoring the delocalised ring of electrons which originally gave the benzene its special stability.
Answered by | 16 Feb, 2012, 01:44: PM
Concept Videos
CBSE 11-science - Chemistry
Asked by kirithshiv | 24 Feb, 2024, 12:12: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by shivanij4734 | 16 Dec, 2023, 08:30: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by maibamjohnny89 | 15 Jan, 2022, 09:38: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by archu312004 | 07 Feb, 2021, 10:21: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by dubeyanubhav65 | 18 Jan, 2021, 09:52: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by shahsaqlain107 | 30 Nov, 2020, 01:10: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by ghastipratiksha | 11 Jul, 2020, 08:14: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by guptaserendri | 01 Jul, 2020, 03:58: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by Manpreetsingh669933 | 13 Apr, 2020, 01:39: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by bittutiwary1234 | 23 Feb, 2020, 12:15: AM
ANSWERED BY EXPERT