Deck 16: Reactions of Aldehydes and Ketones More Reactions of Carboxylic Acid Derivatives

Question 1

What is the systematic name of the following compound?

A) 3-methyl-4-oxopentanal
B) 3-methyl-2-oxopentanal
C) 3-methyl-2-oxo-5-pentanal
D) 3-methyl-5-oxo-2-pentanone
E) 3-methylpentan-5-one-1-al

Answer 1

3-methyl-4-oxopentanal

Question 2

What is the correct order of decreasing reactivity toward nucleophilic addition?
1) Acyl halide
2) Aldehyde
3) Carboxylate ion
4) Carboxylic acid
5) Ketone

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

Answer 2

1>2>5>4>3

Question 3

Which pair of reagents will form the given product?

A) a + g
B) b + f
C) c + e
D) d + f
E) all except D

Answer 3

all except D

Question 4

Which reagent(s) will form the given product?

A) NaBH₄
B) LiAlH₄
C) Raney Ni/H₂
D) H₂, Pd/C
E) A and B

Question 5

What is the product of the following reaction?

A) an amine
B) a carbinolamine
C) an enamine
D) an imine
E) no reaction

Question 6

Which reagents will form the given product?

A)
B)
C)
D)
E)

Question 7

The role of an acid catalyst in the formation of an acetal is to____________.

A) protonate the C?O, making it a better electrophile
B) protonate the C?O, making it more reactive toward weak nucleophiles such as alcohols
C) protonate the hemiacetal, which facilitates loss of water
D) do all of the above

Question 8

What is the product of the following reaction?

A)
B)
C)
D)
E) No reaction

Question 9

Which of the following alkyl halides cannot be used to form a phosphonium ylide?

A)
B)
C)
D)

Question 10

What is the major product of the following reaction?

A)
B)
C)
D)
E)

Question 11

What is the major product of the following reaction?

A)
B)
C)
D)
E)