- Which of the following group on benzene ring acts as activating group for aromatic electrophilic substitution?
- Which group deactivates the benzene ring towards electrophilic substitution reaction?
- Is OCH3 Ortho-para or meta?
- Is benzene ortho para or meta directing?
- Is NH2 Ortho para directing?
- Why aniline is ortho and para directing justify with diagram?
- Is ester EWG or EDG?
Which of the following group on benzene ring acts as activating group for aromatic electrophilic substitution?
Nitro group when attached to benzene ring exerts deactivating meta directing effect. On the other hand methyl group, amino group and hydroxy group activates the ring towards electrophillic aromatic substitution reaction and are ortho para directing groups.
Which group deactivates the benzene ring towards electrophilic substitution reaction?
Deactivating group
Is OCH3 Ortho-para or meta?
Experiments show us that they are ortho-para directors. So the fact that they can contribute to resonance (like OCH3) is what stabilizes the ortho-para products relative to meta. The bottom line for today is that groups that can donate electrons will stabilize the intermediate carbocation, favoring ortho-para products.
Is benzene ortho para or meta directing?
If the relative yield of the ortho product and that of the para product are higher than that of the meta product, the substituent on the benzene ring in the monosubstituted benzene is called an ortho, para directing group. If the opposite is observed, the substituent is called a meta directing group.
Is NH2 Ortho para directing?
Answer. In NH2 the nitrogen attached to the benzene ring has excess of electron hence it is + R directing group. While in NO2 the nitrogen attached to the benzene ring do not have extra lone pair of electrons hence it is -R effecting group which is meta directing.
Why aniline is ortho and para directing justify with diagram?
NH2 group in aniline is ortho and para directing group because they can realese electrons towards ring due to resonance and at the same time they withdraw the electrons towads themselves from aromatic ring due to +1 effect.
Is ester EWG or EDG?
Member. in the kaplan book it says anything with a Carbonyl is withdrawing (meta director), but in one of the practice tests is that the ester is electron donating (ortho/para).