Question 1

Provide the structure of the major product(s)for the following reaction.

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V E

Question 2

Classify the following compound as aromatic,antiaromatic,or nonaromatic.Explain your choice.

Accepted Answer

Antiaromatic
It is cyclic,planar,conjugated but does not follow Hückel's rule with 4 pairs of  $\pi$electrons

Question 3

What is the structure for 1,3-diphenylbutane?

Accepted Answer

The answer of What is the structure for 1,3-diphenylbutane?...

Question 4

Classify the following compounds as aromatic,antiaromatic,or nonaromatic.Explain your choice.

Accepted Answer

I.Aromatic
It is cyclic,planar,conjugate

Question 5

The three isomers of dimethylbenzene are commonly named o-xylene,m-xylene,
p-xylene.These three isomers are difficult to distinguish using 1H NMR,but they can be easily identified using 13C NMR.Describe how 13C NMR distinguishes these three isomers.

Accepted Answer

In the proton decoupled 13C NM

Question 6

What is the IUPAC name for the following compound?

Accepted Answer

2-ethyl-4-

Question 7

Using a Frost circle,draw the molecular orbital energy diagram for the cyclononatetraenyl cation   and predict if it is aromatic.

Accepted Answer

@#IMG-DLM& It is not

Question 8

What is the IUPAC name for the following compound?

Accepted Answer

The answer of What is the IUPAC name for the...

Question 9

Which of the following is another name for 4-chlorobenzaldehyde?

Accepted Answer

A) o-chlorobenzaldehyde 
B) m- chlorobenzaldehyde 
C) p-chlorobenzaldehyde 
D) styrene 
E) 1-chlorobenzaldehyde 
A) o-chlorobenzaldehyde 
B) m- chlorobenzaldehyde 
C) p-chlorobenzaldehyde 
D) styrene 
E) 1-chlorobenzaldehyde

Question 10

What is the structure for 4-amino-2-bromophenol?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 11

Which one of the following compound is nonaromatic?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 12

Classify the following compound as aromatic,antiaromatic,or nonaromatic.Explain your choice.

Accepted Answer

Aromatic
It is cycli

Question 13

Provide the structure(s)of the intermediate product(s)in the following reaction sequence.

Accepted Answer

The answer of Provide the structure(s)of the intermediate product(s)in the...

Question 14

Provide stepwise synthesis for the following

Accepted Answer

The answer of Provide stepwise synthesis for the following ...

Question 15

Provide the structure of the major product(s)for the following reaction.

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) Both I and II 
A) I 
B) II 
C) III 
D) IV 
E) Both I and II

Question 16

Provide a structure for the compound with molecular formula C10H12O2 and with the following spectroscopic data.IR: 1680 cm−1,2750 cm−1,2850 cm−1
1H NMR: 1.1$\delta$ (triplet,I=3H),3.5$\delta$ (quartet,I=2H),4.5$\delta$ (singlet,I=2H),7.3$\delta$ (doublet,I=2H),7.7$\delta$ (doublet,I=2H),9.9$\delta$ (singlet,I=1H)

Accepted Answer

The answer of Provide a structure for the compound with...

Question 17

What is the IUPAC name for the following compound?

Accepted Answer

A) 5-bromo-4-nitroaniline 
B) 5-bromo-p-nitroaniline 
C) 1-bromo-2-nitroaniline 
D) 3-bromo-4-nitroaniline 
E) p-nitro-m-bromoaniline 
A) 5-bromo-4-nitroaniline 
B) 5-bromo-p-nitroaniline 
C) 1-bromo-2-nitroaniline 
D) 3-bromo-4-nitroaniline 
E) p-nitro-m-bromoaniline

Question 18

What is the structure for p-aminobenzoic acid (PABA)?

Accepted Answer

The answer of What is the structure for p-aminobenzoic acid...

Question 19

The number of π electrons present in an antiaromatic compound:

Accepted Answer

A) 4n + 2 
B) 2n + 2 
C) 4n 
D) none 
E) none of these 
A) 4n + 2 
B) 2n + 2 
C) 4n 
D) none 
E) none of these

Question 20

Classify the following compounds as aromatic,antiaromatic,or nonaromatic.Explain your choice.

Accepted Answer

I.Aromatic
It is cyclic,planar,conjugate

Exam 18: Aromatic Compounds

Provide the structure of the major product(s)for the following reaction.

Classify the following compound as aromatic,antiaromatic,or nonaromatic.Explain your choice.

What is the structure for 1,3-diphenylbutane?

Classify the following compounds as aromatic,antiaromatic,or nonaromatic.Explain your choice.

The three isomers of dimethylbenzene are commonly named o-xylene,m-xylene, p-xylene.These three isomers are difficult to distinguish using 1H NMR,but they can be easily identified using 13C NMR.Describe how 13C NMR distinguishes these three isomers.

What is the IUPAC name for the following compound?

Using a Frost circle,draw the molecular orbital energy diagram for the cyclononatetraenyl cation and predict if it is aromatic.

What is the IUPAC name for the following compound?

Which of the following is another name for 4-chlorobenzaldehyde?

What is the structure for 4-amino-2-bromophenol?

Which one of the following compound is nonaromatic?

Classify the following compound as aromatic,antiaromatic,or nonaromatic.Explain your choice.

Provide the structure(s)of the intermediate product(s)in the following reaction sequence.

Provide stepwise synthesis for the following

Provide the structure of the major product(s)for the following reaction.

What is the IUPAC name for the following compound?

What is the structure for p-aminobenzoic acid (PABA)?

The number of π electrons present in an antiaromatic compound:

Classify the following compounds as aromatic,antiaromatic,or nonaromatic.Explain your choice.

A Review of General Chemistry: Electrons, Bonds, and Molecular Properties

Molecular Representations

Acids and Bases

Alkanes and Cycloalkanes

Stereoisomerism

Chemical Reactivity and Mechanisms

Substitution Reactions

Alkenes: Structure and Preparation Via Elimination Reactions

Addition Reactions of Alkenes

Alkynes

Radical Reactions

Synthesis

Alcohols and Phenols

Ethers and Epoxides; Thiols and Sulfides

Nuclear Magnetic Resonance Spectroscopy

Infrared Spectroscopy and Mass Spectrometry

Conjugated Pi Systems and Pericyclic Reactions

Aromatic Substitution Reactions

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Alpha Carbon Chemistry: Enols and Enolates

Amines

Carbohydrates

Amino Acids, Peptides, and Proteins

Lipids

Synthetic Polymers

Filters

The three isomers of dimethylbenzene are commonly named o-xylene,m-xylene, p-xylene.These three isomers are difficult to distinguish using ¹H NMR,but they can be easily identified using ¹³C NMR.Describe how ¹³C NMR distinguishes these three isomers.