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Concept explainers
(a)
Interpretation:
The structure of the product formed in the given reaction is to be predicted.
Concept introduction:
(b)
Interpretation:
The structure of the product formed in the given reaction is to be predicted.
Concept introduction:
Aldehydes or ketones on reaction with two equivalents of alcohol form acetals. Acetal formation takes place in presence of acids, commonly
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Chapter 19 Solutions
EBK ORGANIC CHEMISTRY
- Describe how would you distinguish the following pairs, (a) Benzene and cyclohexane (b) Phenol and toluene (c) Phenol and benzoic acidarrow_forward3. The following compound has been synthesised in the lab. (a) Give two synthesis methods for the preparation of the compound. (b) Between the two synthesis method given in (a), explain which method is better.arrow_forward(a) Give chemical tests to distinguish between(i) Phenol and Benzoic acid (ii) Benzophenone and Acetophenonearrow_forward
- Provide IUPAC names for the following compounds. (a) -OH (b)arrow_forwardWrite the structure of the major organic product formed in the reaction of each of the following with hydrogen bromide in the absence of peroxides and in their presence. (a) 1-Pentene (b) 2-Methyl-2-butene (c) 1-Methylcyclohexenearrow_forward(a) When bromine is added to two beakers, one containing phenyl iso propyl ether and the other containing cyclohexene, the bromine color in both beakers disappears. What observation could you make while performing this test that would allow you to distinguish the alkene from the aryl ether? (b) Write any three methods in detail for the preparation of aldehyde from primary alcohol. (c) State the clemmenson reduction.arrow_forward
- Answer ALL parts of this question. (a) Compound Z is a tertiary aromatic amine with the formula, C8H11N. Provide a chemical structure for compound Z. (b) Provide a reaction scheme for the preparation of nitrous acid. (c) Draw the structure of the product formed exclusively when nitrous acid reacts with Z. (d) Give a curly arrow mechanism for the preparation of the yellow azo-dye from the reaction of Z with benzenediazonium chloride.arrow_forwardDraw the structures of the following compounds. (a) tert-pentyl iodidearrow_forwardAnswer ALL parts of this question. (a) Using resonance structures, discuss the following statement; phenols are much stronger acids than aliphatic alcohols. (b) Give the structure of a stronger organic acid than phenol. (c) Rationalise the acidity of the latter organic acid by drawing two resonance structures of the conjugate base. (d) Eugenol is a natural product derived from the dried flower buds of the evergreen tree, Eugenia aromatica. Briefly describe a procedure with reagents required to extract eugenol as a single component from the mixture of compounds present in these flower buds. OH LOCH 3 eugenolarrow_forward
- (a) Although phenoxide ion has more number of resonating structures than carboxylate ion, carboxylic acid is a stronger acid than phenol. Give two reasons.(b) How will you bring about the following converstions?(i) Propanone to propane (ii) Benzoyl chloride to benzaldehyde(iii) Ethanal to but-2-enalarrow_forwardWhich is the stronger acid in each of the following pairs? Explain your reasoning. (a) Phenol or p-hydroxybenzaldehyde (b) m-Cyanophenol or p-cyanophenol (c) o-Fluorophenol or p-fluorophenolarrow_forwardWrite chemical equations expressing each of the following: (a) Preparation of o-nitrophenyl acetate by sulfuric acid catalysis of the reaction between a phenol and an acid anhydride. (b) Esterification of 2-naphthol with acetic anhydride in aqueous sodium hydroxide (c) Reaction of phenol with benzoyl chloridearrow_forward
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