Which of the following statements about substituent effect in electrophilic aromatic substitution reactions (E.A.S.) is false? Electron-withdrawing groups (EWGs) passivates the benzene ring for ortho and para substitution Carbonyl group which are bonded directly to the ring are called electron withdrawing groups (EWGs) In nitration of benzaldehyde, major products are ortho and para-nitro benzaldehyde Regioselectivity in multiple subtitution is determined by the substituent which has a higher activation effect F, Cl, Br, and I are orto-para directing groups, but have passivating effect

Statement 1 and statement 3 are false 1 Electron-withdrawing groups (EWGs) passivates the…

Answered: subtitution is determined by the…

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subtitution is determined by the substituent which has a higher activation effect F, Cl, Br, and I are

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter11: Ethers, Epoxides, And Sulfides

Section: Chapter Questions

Problem 11.18P

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Concept explainers

Aromatic Compounds

Aromatic organic compound or aromatic system is an important class of hydrocarbons under the branch of organic chemistry. Aromatic compounds are also called arenas. The definition of aromatic organic compounds can be stated as a class of organic compounds with a planar cyclic ring of atoms bonded through alternated single and double bonds. Due to these alternating bonds, a peculiar feature termed as ‘resonance’, that is, delocalization of pi electrons or the electrons is shared within the atoms of the ring which are present in the aromatic compounds. The word ‘aromatic’ includes a Greek word ‘aroma’ which means smell, indicating that they were named as such due to the sweet odor they produce. Many well-known flavors such as vanilla, cinnamon, and few scents from flowers are extracted from aromatic compounds. Benzene with chemical formula C6H6 is a very common aromatic compound that contains six atoms of carbon held in the cyclic ring of alternate double bonds. It is also to be noted that not all aromatic compounds contain benzene ring. This can be explained by Huckel’s rule.

Question

Which of the following statements about substituent effect in electrophilic aromatic substitution reactions (E.A.S.) is false?
Electron-withdrawing groups (EWGs) passivates the benzene ring for ortho and para substitution

Carbonyl group which are bonded directly to the ring are called electron withdrawing groups (EWGs)

In nitration of benzaldehyde, major products are ortho and para-nitro benzaldehyde

Regioselectivity in multiple subtitution is determined by the substituent which has a higher activation effect

F, Cl, Br, and I are orto-para directing groups, but have passivating effect

Definition Definition Organic compounds with a planar cyclic ring of atoms bonded through alternated single and double bonds. Aromatic organic compounds, also called arenes, are an important class of hydrocarbons under the branch of organic chemistry.

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