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Chapter 20: Q26P (page 1038)

Draw resonance forms to show how the BHA radical is stabilized by delocalization of the radical electron over other atoms in the molecule.

Short Answer

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The resonating structures are the different structures of a single (similar) compound that show the movement of charges or electrons bringing stability to the compound.

Step by step solution

01

The Resonating structures.

The resonating structures are the different structures of a single (similar) compound that show the movement of charges or electrons bringing stability to the compound.

02

The BHA radical.

The BHA (butylated hydroxyanisole) compound is;

The compound in presence of light forms a radical; as shown below.

03

The BHA radical is stabilized by delocalization of the radical electron over other atoms in the molecule.

The possible resonating structures are;

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Most popular questions from this chapter

Most of the Fischer esterification mechanism is identical with the mechanism of acetal formation. The difference is in the final step, where a resonance-stabilized carbocation loses a proton to give the ester. Write mechanisms for the following reactions, with the comparable steps directly above and below each other. Explain why the final step of the esterification (proton loss) cannot occur in acetal formation, and show what happens instead.

Question: Arrange each group of compounds in order of increasing basicity.

  1. CH3COO-,CICH2C00- , and PhO-
  2. sodium acetylide, sodium amide, and sodium acetate
  3. sodium benzoate, sodium ethoxide, and sodium phenoxide
  4. pyridine, sodium ethoxide, and sodium acetate

Q.13Most of the Fischer esterification mechanism is identical with the mechanism of acetal formation. The difference is in the final step, where a resonance-stabilized carbocation loses a proton to give the ester. Write mechanisms for the following reactions, with the comparable steps directly above and below each other. Explain why the final step of the esterification (proton loss) cannot occur in acetal formation, and show what happens instead.

Show how you would synthesize the following compounds from the appropriate carboxylic acids or acid derivatives.

a)


b)



c)

Show how you would convert glycine to following derivatives. Show the structure of the product in each case.

(a) Glycine isopropyl ester

(b) N-benzoylglycine

(c) N-benzyloxycarbonylglycine

(d) Tert-butyloxycarbonylglycine
See all solutions

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