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IGNOU CHE-06 - Organic Reaction Mechanism

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Organic Reaction Mechanism

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IGNOU CHE-06 Code Details

  • University IGNOU (Indira Gandhi National Open University)
  • Title Organic Reaction Mechanism
  • Language(s) English
  • Code CHE-06
  • Subject Chemistry
  • Degree(s) B.Sc.
  • Course Core Courses (CC)

IGNOU CHE-06 English Topics Covered

Block 1 - Basic Concepts and Substitutions

  • Unit 1 - Reaction Mechanism–Introduction
  • Unit 2 - Kinetics and Mechanism of Reactions
  • Unit 3 - Aliphatic Nucleophilic Substitution
  • Unit 4 - Aromatic Electrophilic Substitution

Block 2 - Addition and Elimination

  • Unit 1 - Addition to Carbon-Carbon Multiple Bond System
  • Unit 2 - Nucleophilic Addition to Carbonyl Compounds
  • Unit 3 - Elimination Reactions
  • Unit 4 - Oxidation and Reduction

Block 3 - Reaction Intermediates and Molecular Rearrangements

  • Unit 1 - Carbenes, Nitrenes and Benzynes
  • Unit 2 - Free Radicals
  • Unit 3 - Molecular Rearrangements
  • Unit 4 - Pericyclic Reactions

Block 4 - Photochemistry and Synthetic Methods

  • Unit 1 - Organic Photochemistry
  • Unit 2 - Strategy of Organic Synthesis
  • Unit 3 - Case Study of Some Chemicals of Daily Use-I
  • Unit 4 - Case Study of Some Chemicals of Daily Use-II
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IGNOU CHE-06 (January 2024 - December 2024) Assignment Questions

1. a) Which of the carbocation is more stable in the following pairs and why? b) Explain the following: i) Enol form does not react with water to give diol. ii) Fluorine and iodine generally do not react with alkene or alkyne. iii) Hydroboration looks like an anti-Markownikowf’s addition. 2. Explain the following: a) Electron withdrawing substituents at the carbonyl carbon increases the reactivity towards nucleophilic addition reactions. b) Reaction of hydrocyanic acid and benzaldehyde is very slow, but become fast when cyanide ion is added. 3. a) Explain isotope effect in E2 elimination reaction with suitable example. b) Differentiate Saytzeff and Hofmann rules giving suitable examples. 4. a) State oxidation state. Calculate the oxidation state of carbon atom of CCl4. b) Predict the product(s) and give the mechanism of the following reactions: 5. Write short note on the following: (Give mechanism) a) Aldol condensation b) Michael addition 6. Write the chemical reaction for the following reactions along with their detail description: a) Reimer-Tiemann reaction b) Carbylamine reaction c) Wittig reaction d) Wolf rearrangement 7. a) Explain, why the reaction of m-bromoanisole with sodamide gives only one product. b) Describe the bromination reaction at alkylic and benzylic position by N-bromosuccinimide. 8. a) Write detail mechanism for the following rearrangements: i) Wagner-Meerwein rearrangement ii) Backmann rearrangement b) Explain the mechanism of [4+2] cycloaddition. 9. a) Taking suitable examples, explain the role of sensitisers in photo reactions. b) Describe reaction types used to construct a carbon skeleton with suitable examples. 10. Write short notes on: a) Cleaning action of soaps b) Auxochromes c) Antibiotics d) Condensation polymers e) Retrosynthesis

IGNOU CHE-06 (January 2023 - December 2023) Assignment Questions

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