Organic Chemistry Oxidation and Reduction Quiz
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Questions and Answers

Which of the following reagents is used for the selective oxidation of primary alcohols to aldehydes?

  • PCC (correct)
  • DIBAL-H
  • K2Cr2O7/H2SO4
  • RMgBr
  • What is the correct sequence for the synthesis of a ketone from a nitrile using the Grignard reagent RMgBr?

  • Nitrile -> Carboxylic acid -> Ketone
  • Nitrile -> Aldehyde -> Ketone
  • Nitrile -> Grignard reagent -> Ketone (correct)
  • Nitrile -> Alcohol -> Ketone
  • Which reagent is used to selectively reduce an ester to an aldehyde?

  • DIBAL-H (correct)
  • RMgBr
  • PCC
  • K2Cr2O7/H2SO4
  • What is the purpose of using Lithium tri-tert-butoxyaluminium hydride (LTBA-H) in organic synthesis?

    <p>To reduce ketones to alcohols</p> Signup and view all the answers

    Which of the following reactions is the Rosenmund reduction used for?

    <p>Reduction of acyl chlorides to aldehydes</p> Signup and view all the answers

    What reagent is commonly used to convert a nitrile into a ketone?

    <p>Grignard reagent</p> Signup and view all the answers

    Which of the following is a common method for the synthesis of aldehydes?

    <p>Rosenmund reduction</p> Signup and view all the answers

    What type of alcohol can be converted into a ketone using PCC?

    <p>Secondary alcohol</p> Signup and view all the answers

    Which reagent is typically used for reducing an acid chloride to an aldehyde?

    <p>$\text{Rosenmund catalyst}$</p> Signup and view all the answers

    Which compound is formed from the reaction of an acid chloride with a primary alcohol?

    <p>Ester</p> Signup and view all the answers

    What reagents are used in the synthesis of ketones from nitriles?

    <p>RMgBr</p> Signup and view all the answers

    Which reagent is required for the synthesis of aldehydes from esters?

    <p>DIBAL-H</p> Signup and view all the answers

    What type of reaction involves nucleophiles attacking aldehydes or ketones?

    <p>Nucleophilic addition reactions</p> Signup and view all the answers

    In the synthesis of ketones, which compound is reduced using Lithium tri-tert-butoxyaluminium hydride?

    <p>Alkynes</p> Signup and view all the answers

    What is the product when alkynes undergo hydroboration oxidation followed by reaction with water and hydroxide?

    <p>Aldehyde</p> Signup and view all the answers

    Study Notes

    Oxidation and Reduction Reactions

    • PCC (Pyridinium Chlorochromate) is used to selectively oxidize primary alcohols to aldehydes.
    • The Grignard reagent RMgBr is used to synthesize a ketone from a nitrile, with the correct sequence being: nitrile → imine → ketone.
    • DIBAL-H (Diisobutylaluminium Hydride) is used to selectively reduce an ester to an aldehyde.
    • Lithium tri-tert-butoxyaluminium hydride (LTBA-H) is used to reduce acid chlorides to aldehydes in organic synthesis.
    • The Rosenmund reduction is used to reduce an acid chloride to an aldehyde.

    Ketone Synthesis

    • The Grignard reagent RMgBr is commonly used to convert a nitrile into a ketone.
    • Alkynes can be converted into ketones through hydroboration oxidation followed by reaction with water and hydroxide.
    • The synthesis of ketones from nitriles involves the use of Grignard reagents and water.

    Aldehyde Synthesis

    • The reduction of esters using DIBAL-H is a common method for the synthesis of aldehydes.
    • PCC can be used to convert secondary alcohols into ketones.

    Reaction Types

    • Nucleophilic addition is a type of reaction that involves nucleophiles attacking aldehydes or ketones.

    Acid Chloride Reactions

    • The reaction of an acid chloride with a primary alcohol forms an ester.

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    Description

    Test your knowledge on specific oxidation and reduction reactions in organic chemistry. Identify the products formed from alcohol to ketone conversion and acid chloride to aldehyde synthesis. Explore reactions involving PCC, Rosenmund reduction, and Lithium tri-tert-butoxyaluminium hydride.

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