Question

explain the directive influence of phenol nitrobenzene for the incoming electrophile​

Answer 1

Explanation:

show that if any seven integer are chosen from 1 to 12 then two of them will add to 13?

Answer 2

Answer:

When mono substituted benzene undergoes an electrophilic attack, the rate of reaction and the site of attack vary with the functional group already attached to it. Some groups increase the reactivity of benzene ring and are known as activating groups while others which decrease the reactivity are known as deactivating groups. We further divide these groups into two categories depending on the way they influence the orientation of attack by the incoming electrophile. Those which increase the electron density at ”ortho” and “para” positions are known as ortho-para directors while those which increase the electron density at “meta” position are known as meta directors. Some examples of directive influence of functional group in mono substituted benzene are explained below:

Ortho-para directing group: As discussed earlier, these groups direct the electrophilic attack on “ortho” and “para” positions. All activating groups are “ortho-para” directors, for example –NH2, –NHR, –NHCOCH3, –OCH3,–CH3, –C2H5, etc.