Question 1

Draw the structure of 4-hydroxypentanal.

Accepted Answer

The answer of Draw the structure of 4-hydroxypentanal....

Question 2

Which of the following compounds is benzaldehyde?

Accepted Answer

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

Question 3

Propose a plausible mechanism that would explain the following conversions:

Accepted Answer

The answer of Propose a plausible mechanism that would explain...

Question 4

Identify the compound whose molecular formula and proton NMR spectra are given below:
C15H14O; a)triplet,at 2.1 ppm (2H)
b)triplet,at 2.4 ppm (2H)
c)multiplet,at 7.9 - 7.2 ppm (10H)

Accepted Answer

Question 5

In the following reduction reaction,how many hydride ions are added to the electrophilic carbon of the nitrile?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 6

Provide the IUPAC name for the organic compound below.

Accepted Answer

ethyl 5-ox

Question 7

What is/are the major product(s)of the following reaction?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 8

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

Accepted Answer

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

Question 9

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 10

Provide the systematic name of the compound below.

Accepted Answer

2-chloro-5

Question 11

When the carbonyl group of a neutral ketone is protonated

Accepted Answer

A) the resulting species becomes more electrophilic. 
B) the resulting species is activated toward nucleophilic attack. 
C) subsequent nucleophilic attack on the resulting species is said to occur under acid-catalyzed conditions. 
D) the resulting species has a positive charge. 
E) all of the above. 
A) the resulting species becomes more electrophilic. 
B) the resulting species is activated toward nucleophilic attack. 
C) subsequent nucleophilic attack on the resulting species is said to occur under acid-catalyzed conditions. 
D) the resulting species has a positive charge. 
E) all of the above.

Question 12

What is the common name for the following compound?

Accepted Answer

A) chloroaldehyde 
B) α-chloroacetaldehyde 
C) β-chloroacetaldehyde 
D) 2-chloroethanal 
E) α-chloroethanal 
A) chloroaldehyde 
B) α-chloroacetaldehyde 
C) β-chloroacetaldehyde 
D) 2-chloroethanal 
E) α-chloroethanal

Question 13

What carbonyl compound and what phosphonium ylide are required for the synthesis of the following alkene?

Accepted Answer

A) I 
B) II 
C) III 
D) II or III 
E) I,II,or III 
A) I 
B) II 
C) III 
D) II or III 
E) I,II,or III

Question 14

Which of the following does not represent a reduction reaction?

Accepted Answer

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

Question 15

What class of organic compounds results when cyclopentanone reacts with ethylamine in the presence of trace acid?

Accepted Answer

A) cyanohydrin 
B) semicarbazone 
C) imine 
D) enamine 
E) oxime 
A) cyanohydrin 
B) semicarbazone 
C) imine 
D) enamine 
E) oxime

Question 16

In carbon NMR,the carbon atom of the carbonyl group in aldehydes and ketones has a chemical shift of about

Accepted Answer

A) 20 ppm 
B) 40 ppm 
C) 60 ppm 
D) 120 ppm 
E) 200 ppm 
A) 20 ppm 
B) 40 ppm 
C) 60 ppm 
D) 120 ppm 
E) 200 ppm

Question 17

What is the major organic 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 18

Give the systematic name for the structure.

Accepted Answer

A) 2-methyl-4-hexanone 
B) 2-methyl-4-heptanone 
C) 2-methyl-4-pentanone 
D) 5-methyl-3-hexanone 
E) 5-methyl-3-heptanone 
A) 2-methyl-4-hexanone 
B) 2-methyl-4-heptanone 
C) 2-methyl-4-pentanone 
D) 5-methyl-3-hexanone 
E) 5-methyl-3-heptanone

Question 19

Give the product for the following reaction.

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 20

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

Accepted Answer

Compound I shows a C-H peak fo

Exam 16: Reactions of Aldehydes and Ketones

Draw the structure of 4-hydroxypentanal.

Which of the following compounds is benzaldehyde?

Propose a plausible mechanism that would explain the following conversions:

Identify the compound whose molecular formula and proton NMR spectra are given below: C15H14O; a)triplet,at 2.1 ppm (2H) b)triplet,at 2.4 ppm (2H) c)multiplet,at 7.9 - 7.2 ppm (10H)

In the following reduction reaction,how many hydride ions are added to the electrophilic carbon of the nitrile?

Provide the IUPAC name for the organic compound below.

What is/are the major product(s)of the following reaction?

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

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

Provide the systematic name of the compound below.

When the carbonyl group of a neutral ketone is protonated

What is the common name for the following compound?

What carbonyl compound and what phosphonium ylide are required for the synthesis of the following alkene?

Which of the following does not represent a reduction reaction?

What class of organic compounds results when cyclopentanone reacts with ethylamine in the presence of trace acid?

In carbon NMR,the carbon atom of the carbonyl group in aldehydes and ketones has a chemical shift of about

What is the major organic product of the following reaction?

Give the systematic name for the structure.

Give the product for the following reaction.

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

Remembering General Chemistry: Electronic Structure and Bonding

Acids and Bases: Central to Understanding Organic Chemistry

An Introduction to Organic Compounds: Nomenclature, physical Properties, and Structure

Isomers: the Arrangement of Atoms in Space

Alkenes: Structure,nomenclature,and an Introduction to Reactivity - Thermodynamics and Kinetics

The Reactions of Alkenes - the Stereochemistry of Addition Reactions

The Reactions of Alkynes - Introduction to Multistep Synthesis

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

Substitution and Elimination Reactions of Alkyl Halides

Reactions of Alcohols, ethers, epoxides, amines and Sulfur-Containing Compounds

Organometallic Compounds

Radicals

Mass Spectrometry,infrared Spectroscopy,and Uvvis Spectroscopy

Nmr Spectroscopy

Reactions of Carboxylic Acids and Carboxylic Acid Derivatives

Reactions at the Α-Carbon

Reactions of Benzene and Substituted Benzenes

More About Amines - Reactions of Heterocylic Compounds

The Organic Chemistry of Carbohydrates

Amino Acids,peptides,and Proteins

Catalysis in Organic Reactions and in Enzymatic Reactions

The Organic Chemistry of the Coenzymes, compounds Derived From Vitamins

The Organic Chemistry of the Metabolic Pathways

The Organic Chemistry of Lipids

The Chemistry of the Nucleic Acids

Synthetic Polymers

Pericyclic Reactions

Filters

Identify the compound whose molecular formula and proton NMR spectra are given below: C₁₅H₁₄O; a)triplet,at 2.1 ppm (2H) b)triplet,at 2.4 ppm (2H) c)multiplet,at 7.9 - 7.2 ppm (10H)