How many compounds are more reactive Thanbenzene towards electrophilic aromatic Substitutionreaction naphthalene anthracene phenanthrene pyrrole?

Among the given compounds, only five compounds are more reactive than benzene towards electrophilic aromatic substitution reaction. They are shown in the figure.

Which is more reactive than benzene towards electrophilic substitution reaction?

Phenol is more reactive than benzene towards electrophilic substitution reaction. The donation of the oxygen's lone pair into the ring system increases the electron density around the ring. That makes the ring much more reactive than it is in benzene. The intermediate carbocation is more resonance stabilized.

Which is more reactive benzene naphthalene or anthracene?

Although naphthalene, phenanthrene, and anthracene resemble benzene in many respects, they are more reactive than benzene in both substitution and addition reactions.

Is naphthalene more reactive than benzene towards electrophilic aromatic substitution reaction?

Naphthalene is more reactive towards electrophilic substitution reactions than benzene.

Is benzene more reactive than naphthalene?

Naphthalene is more reactive than benzene, both in substitution and addition reactions, and these reactions tend to proceed in a manner that maintains one intact benzene ring.

Envisioning Chemistry: Electrodeposition

Why is pyrrole more reactive than benzene?

And pyrrole, furan, and thiophene are all more reactive than benzene with EAS because the lone pair on the heteroatom can donate electron density into the ring by resonance, thus stabilizing the carbocation intermediate more effectively.

Is anthracene more aromatic than naphthalene?

There are three aromatic rings in Anthracene. Therefore the order of resonance energy as per the benzene ring in the decreasing order is : Benzene > Naphthalene > Phenanthrene > Anthracene.

Which is more aromatic benzene or naphthalene?

Benzene has six pi electrons for its single aromatic ring. Naphthalene has two aromatic rings, but only 10 pi electrons (rather than the twelve electrons that it would prefer). This means that naphthalene has less aromatic stability than two isolated benzene rings would have.

Which is more reactive towards electrophilic substitution?

Hence, the electron density on benzene ring is maximum in aniline. Hence, aniline is the most reactive towards electrophilic aromatic substitution.

Why is anthracene more reactive than benzene?

Anthracene has 25 kcal/mol less resonance energy than 3×benzene rings . Phenanthrene has 17 kcal/mol less resonance energy than 3×benzene rings .

Why anthracene is more reactive than phenanthrene?

Phenanthrene is more stable than anthracene due to the larger stability of the π-system of the former, which is more aromatic. When two electrons are removed, i.e., dicationic systems are analyzed, the reverse trend is obtained, so the linear isomer is more stable than the kinked one.

Which position of naphthalene is more reactive?

The alpha position is more prone to reaction position in naphthalene because the intermediate formed becomes more stable due to more diffusion of charges through the adjacent pie electrons. Thus resonance do have its role to play in reactivity of alpha position.

Is pyridine more reactive than benzene?

Answer: Pyridine is more reactive than benzene because the presence of nitrogen enables pyridine to react with nucleophiles. Nitrogen is an electron withdrawing substituents enables the aromatic ring to participate in such reactions and the substitution happens in the ortho and meta positions.

Which of the following species is less reactive than benzene in electrophilic substitution reaction?

So, Nitrobenzene molecule is less reactive towards electrophilic aromatic substitution.

Which is most reactive towards sn1?

S_N1 reaction involves the formation of carbocation intermediate. More the stability of carbocation more is the reactivity of alkyl/aryl halides towards S_N1 reaction. Thus, C₆H₅C(CH₃)(C₆H₅)Br is most reactive towards S_N1 reaction. S_N1 reaction involves the formation of carbocation intermediate.

Which is least reactive in electrophilic substitution?

Benzenesulphonic acid is least reactive in an electrophilic aromatic substitution due to −M effect.

Which is most reactive in electrophilic aromatic substitution Mcq?

The correct answer is Option B. Fuming sulphuric acid, H₂S₂O₇, can be thought of as a solution of SO₃ in sulphuric acid - and so is a much richer source of the SO₃.

Which of the following molecules would be most reactive toward electrophilic aromatic substitution?

phenols. Phenols are highly reactive toward electrophilic aromatic substitution, because the nonbonding electrons on oxygen stabilize the intermediate cation.

Which of the following is the most reactive towards electrophilic aromatic substitution for halogen?

The compound which is most reactive towards the electrophilic substitution is the Methyl group.

Which is more aromatic pyrrole furan thiophene?

Since N is less electronegative than O, it will be slightly more stable than O with that positive charge. Hence, pyrrole will be more aromatic than furan. Therefore, the aromaticity order should be: benzene > pyridine > pyrrole > furan > thiophene.

Is naphthalene an aromatic compound?

Naphthalene, with two fused rings, is the simplest polycyclic aromatic molecule. Note that all the carbon atoms except those at the points of fusion have a bond to a hydrogen atom. Naphthalene, which has 10 π electrons, satisfies the Hückel rule for aromaticity.

How many benzene rings does naphthalene have?

naphthalene, the simplest of the fused or condensed ring hydrocarbon compounds composed of two benzene rings sharing two adjacent carbon atoms; chemical formula, C₁₀H₈.

Why are naphthalene and anthracene regarded as aromatic compound?

Naphthalene. Naphthalene is the simplest polycyclic aromatic hydrocarbon since it is only a bicyclic molecule made up of two aromatic benzenes. The pi electrons in this molecule are even more delocalized than those in the simpler benzene molecule.

Why is anthracene 9 and 10 more reactive?

The reaction follows an electrophilic substitution reaction whose mechanism is given above. A mixture of 9 - nitroanthracene and 9, 10 - dinitroanthracene is obtained. This is because 9 and 10 position of anthracene is the more reactive position.

Which is least aromatic furan or thiophene?

We see that thiophene has more more resonance energy so these compound are more aromatic. And other compound like(pyrrole,furan) ,they has less resonance energy . so they are less aromatic.