Question 1

Would you expect the carbonyl carbon of benzaldehyde to be more or less electrophilic than that of acetaldehyde? Explain using resonance structures.

Accepted Answer

The carbonyl carbon of benzald

Question 2

Complete the following reaction sequence by supplying the missing information:

Accepted Answer

The answer of Complete the following reaction sequence by supplying...

Question 3

Provide the major organic product of the following.

Accepted Answer

The answer of Provide the major organic product of the...

Question 4

List the following carbonyl compounds in order of decreasing reactivity toward nucleophiles: ester, acid chloride, amide, aldehyde, ketone.

Accepted Answer

acid chlor

Question 5

What sequence of reactions would best accomplish the following conversion?

Accepted Answer

A) NaBH4/H3O+ 
B) HOCH2CH2OH/H+; NaBH4; H+/H2O 
C) KMnO4/HO-; heat 
D) LiAlH4/H3O+ 
E) H2/Pt; PCC 
A) NaBH4/H3O+ 
B) HOCH2CH2OH/H+; NaBH4; H+/H2O 
C) KMnO4/HO-; heat 
D) LiAlH4/H3O+ 
E) H2/Pt; PCC

Question 6

Give the product for the following reaction.

Accepted Answer

A) CH3CH2CH2NHCH3 
B)    
C)    
D) CH3CH2CH2CH3 
E)    
A) CH3CH2CH2NHCH3 
B)    
C)    
D) CH3CH2CH2CH3 
E)

Question 7

Conversion of aldehydes and ketones to imines is an acid-catalyzed process. Explain why this conversion is actually hindered by the presence of too much acid.

Accepted Answer

At very low pH, much

Question 8

Provide the major organic product which results when (CH3)2CHCH2CH2COCl is treated with DIBAH.

Accepted Answer

Question 9

Give the organic products for the reaction.

Accepted Answer

The answer of Give the organic products for the reaction....

Question 10

An unknown compound (A), C10H12O, gave the following proton NMR data:
(a)triplet, at 1.0 ppm (3H)
(b)quartet, at 2.4 ppm (2H)
(c)singlet, at 3.7 ppm (2H)
(d)multiplet, at 7.2 ppm (5H)
Propose a structure for (A).

Accepted Answer

Question 11

What reagent(s)would you use to accomplish the following conversion?

Accepted Answer

A) CH3Br; H3O+ 
B) CH3MgBr; H3O+ 
C) (CH3)2CuLi; H3O+ 
D) CH3Br; LiAlH4; H3O+ 
E) LiAlH4; CH3MgBr; H3O+ 
A) CH3Br; H3O+ 
B) CH3MgBr; H3O+ 
C) (CH3)2CuLi; H3O+ 
D) CH3Br; LiAlH4; H3O+ 
E) LiAlH4; CH3MgBr; H3O+

Question 12

Give the products obtained from the following Wittig reaction. Show both stereoisomers.

Accepted Answer

The answer of Give the products obtained from the following...

Question 13

Propose a sequence of steps to convert propyne to 4-heptanol.

Accepted Answer

1) NaNH₂ 2)

Question 14

What is the major product of 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

Question 15

Propose an IR frequency that would distinguish between the following compounds:

Accepted Answer

Compound I shows a C-H peak fo

Question 16

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

Accepted Answer

The answer of Provide the major organic product(s)of the reaction...

Exam 17: Reactions of Aldehydes and Ketones

Would you expect the carbonyl carbon of benzaldehyde to be more or less electrophilic than that of acetaldehyde? Explain using resonance structures.

Complete the following reaction sequence by supplying the missing information:

Provide the major organic product of the following.

List the following carbonyl compounds in order of decreasing reactivity toward nucleophiles: ester, acid chloride, amide, aldehyde, ketone.

What sequence of reactions would best accomplish the following conversion?

Give the product for the following reaction.

Conversion of aldehydes and ketones to imines is an acid-catalyzed process. Explain why this conversion is actually hindered by the presence of too much acid.

Provide the major organic product which results when (CH3)2CHCH2CH2COCl is treated with DIBAH.

Give the organic products for the reaction.

An unknown compound (A), C10H12O, gave the following proton NMR data: (a)triplet, at 1.0 ppm (3H) (b)quartet, at 2.4 ppm (2H) (c)singlet, at 3.7 ppm (2H) (d)multiplet, at 7.2 ppm (5H) Propose a structure for (A).

What reagent(s)would you use to accomplish the following conversion?

Give the products obtained from the following Wittig reaction. Show both stereoisomers.

Propose a sequence of steps to convert propyne to 4-heptanol.

What is the major product of the following reaction?

Propose an IR frequency that would distinguish between the following compounds:

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

Remembering General Chemistry: Electronic Structure and Bonding

Acids and Bases: Central to Understanding Organic Chemistry

An Introduction to Organic Compounds

Isomers: the Arrangement of Atoms in Space

Alkenes Thermodynamics and Kinetics

Reactions of Alkenes

Reactions of Alkynes Introduction to Multistep Synthesis

Electron Delocalization, Resonance, and Aromaticity More About Molecular Orbital Theory

Substitution Reactions of Alkyl Halides

Elimination Reactions of Alkyl Halides Competition Between Substitution and Elimination

Reactions of Alcohols, Ethers, Epoxides, and Sulfur-Containing Compounds

Organometallic Compounds

Reactions of Alkanes, Radicals

Mass Spectrometry, Infrared Spectroscopy, and Uvvis Spectroscopy

Nmr Spectroscopy

Reactions of Carboxylic Acids and Carboxylic Acid Derivatives

Reactions at the Alpha Carbon of Carbonyl Compounds

Reactions of Benzene and Substituted Benzenes

More About Amines Heterocylic Compounds

Carbohydrates

Amino Acids, Peptides, and Proteins

Catalysis

The Organic Mechanisms of the Coenzymes

The Chemistry of Metabolism

Nucleosides, Nucleotides, and Nucleic Acids

Synthetic Polymers

Pericyclic Reactions

Filters

Provide the major organic product which results when (CH₃)₂CHCH₂CH₂COCl is treated with DIBAH.

An unknown compound (A), C₁₀H₁₂O, gave the following proton NMR data: (a)triplet, at 1.0 ppm (3H) (b)quartet, at 2.4 ppm (2H) (c)singlet, at 3.7 ppm (2H) (d)multiplet, at 7.2 ppm (5H) Propose a structure for (A).