Exam 8: Delocalized Electrons: Their Effect on Stability, pka, and the Products of a Reaction - Aromaticity and Electronic Effects: an Introduction to the Reactions of Benzene

Draw the HOMO of 1,3,5-hexatriene.

Which of the following is a benzylic cation?

Give the major organic product for the reaction.

Which of the following compounds is aromatic?

Identify the resonance hybrid.

Show how the p orbitals overlap to form the nonbonding π molecular orbital of the allyl system.

Provide the structure of the major product which results from 1,4-addition of Br₂ to the diene shown below.

Provide the structure of the major organic product in the following reaction.

What descriptive term is applied to the type of diene represented by 2,4-hexadiene?

What descriptive term is applied to the type of diene represented by 1,5-octadiene?

Identify the most stable structure(s).

Give the major organic product for the reaction.

Draw all major resonance contributors of the species below.

Draw the arrows to go from one resonance structure to another.

Scientists are interested in organic compounds that can serve as conductors of electricity and/or as components of electric circuits.Compound A has properties that may be useful as a rectifier (a device that controls which way electrons flow through it).Draw a resonance structure of compound A that has no separation of charge.(R represents an alkyl chain)

How could the following compound be synthesized using a Diels-Alder reaction?

Provide the structure of the major organic product(s)in the reaction below.

Which of the following is an aromatic hydrocarbon?

Which species is represented by the following distribution of π electrons in the molecular orbitals and energy levels diagram?

What is the hybridization of the carbons labeled A,B,and C?