Q42.The compound A in the following reactions is: (i) CH3 MgBr /H2O (i) O3 −−A → B → C + D (ii) Conc. H2 SO4 /Δ (ii) Zn /H2O (1) (2) (3) (4)
What This Question Tests
This complex multi-step synthesis problem requires working backward from the final products (C and D) through ozonolysis, then determining the alkene (B), and finally identifying the starting alcohol (A) from its Grignard reaction product.
Concepts Tested
📚 NCERT Sections This Tests
7.21 — Name The Reagents Used In The Following Reactions:
Chemistry Class 12 · Chapter 7
7.21 Name the reagents used in the following reactions: (i) Oxidation of a primary alcohol to carboxylic acid. (ii) Oxidation of a primary alcohol to aldehyde. (iii) Bromination of phenol to 2,4,6-tribromophenol. (iv) Benzyl alcohol to benzoic acid. (v) Dehydration of propan-2-ol to propene. (vi) Butan-2-one to butan-2-ol.
8.17 — Complete Each Synthesis By Giving Missing Starting Material, Reagent Or Products
Chemistry Class 12 · Chapter 8
8.17 Complete each synthesis by giving missing starting material, reagent or products
7.20 — How Are The Following Conversions Carried Out?
Chemistry Class 12 · Chapter 7
7.20 How are the following conversions carried out? (i) Propene ® Propan-2-ol. (ii) Benzyl chloride ® Benzyl alcohol. (iii) Ethyl magnesium chloride ® Propan-1-ol. (iv) Methyl magnesium bromide ® 2-Methylpropan-2-ol.
📋 Question Details
- Chapter
- Aldehydes Ketones Carboxylic Acids
- Topic
- Reaction sequences with Grignard, Ozonolysis, and dehydration
- Year
- 2020
- Shift
- 03 Sep Shift 2
- Q Number
- Q42
- Type
- MCQ
- NCERT Ref
- Class 11 Chemistry Ch 13: Hydrocarbons; Class 12 Chemistry Ch 11: Alcohols Phenols Ethers; Class 12 Chemistry Ch 12: Aldehydes Ketones Carboxylic Acids
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