What substituents give ortho para directed substitution?
What substituents give ortho para directed substitution?
Substituents which lead to this result are called, “ortho-, para- directors”. Examples of ortho-, para– directors are hydroxyl groups, ethers, amines, alkyl groups, thiols, and halogens.
Which is a meta directing group in substitution reaction?
Why nitro group is act as meta directing group in electrophilic aromatic substitution?
Why electrophilic substitution is ortho and para positions?
Answer: Explanation: Due to resonance in haloarenes, the ortho and para positions have a rich electron density as compared to the meta position. And an electrophile has a tendency to attack at the electron rich position, therefore electrophilic substitution take place and Ortho and para positions in haloarenes.
Which substitution is an ortho and para director and ring deactivating?
Halogens are deactivating yet ortho,para directing in electrophilic aromatic substitution.
Which one gives meta substituted product on electrophilic substitution?
The electrophilic aromatic substitution of a compound C6H5 Y produces mainly a meta – disubstituted product.
How do you choose ortho meta para?
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.
What are ortho para directing groups?
Ortho, para directing groups are electron-donating groups; meta directing groups are electron-withdrawing groups. The halide ions, which are electron-withdrawing but ortho, para directing, are the exception.
What is ortho meta and para?
The terms ortho, meta, and para are prefixes used in organic chemistry to indicate the position of non-hydrogen substituents on a hydrocarbon ring (benzene derivative). The prefixes derive from Greek words meaning correct/straight, following/after, and similar, respectively.
Which of the following undergo substitution in ortho and para position rather than in meta position?
The answer is Acetinalide. In acetinalide, the electron density is more at ortho and para position compared to meta position.
Why is NO2 group meta directing?
1 Answer. –NO2 group is meta directing because it is an electron withdrawing group. It decreases electron density at ortho– and para–positions thereby directs the incoming group towards meta-position.
Which of the following benzene ring substituents is deactivating but ortho-para directing 1 No 2 OCH3 3 coch3 4 NO2?
Solution : `-Cl , -N -= O` are moderately deactivating but O, P-directing. `-NO2 , – OCH3` are meta directing .
