(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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Organic Chemistry
- Give reasons :(a) Aniline is a weaker base than cyclohexyl amine.(b) It is difficult to prepare pure amines by ammonolysis of alkyl halides.arrow_forward(a) Explain the mechanism of a nucleophilic attack on the carbonyl group of an aldehyde or a ketone.(b) An organic compound (A) (molecular formula CgH16Q2) was hydrolysed with dilute sulphuric acid to give a carboxylic acid (B) and an alcohol (C). Oxidation of (C) with chromic acid also produced (B). On dehydration (C) gives but-1-ene. Write the equations for the reactions involved.arrow_forward18.18 Provide a structural formula for the product from each of the following reactions. (a) (c) (e (1) LDA (2) CH,CH,I NaH CI (b) (d) O. (f Br, CH,CO,H Br, (excess), NaOHarrow_forward
- Arrange each group of compounds in order of increasing acidity.(c) benzoic acid, o-nitrobenzoic acid, m-nitrobenzoic acidarrow_forwardProvide the reagents and solvents (where appropriate) needed to bring about the following transformations. (a) CI (b)arrow_forwardEach of the following is a much weaker base than aniline. Present a resonance argument to explain the effect of the substituent in each case. (a) o-Cyanoaniline (c) p-Aminoacetophenonearrow_forward
- Consider the tetracyclic compound with rings labeled A–D. (a) Which ring is the most reactive in electrophilic aromatic substitution? (b) Which ring is the least reactive in electrophilic aromatic substitution?arrow_forward- Rank the following substances in order of increasing acidity: (a) Phenol, p-methylphenol, p-(trifluoromethyl)phenol (b) Benzyl alcohol, phenol, p-hydroxybenzoic acidarrow_forwardArrange these aprotic solvents in order of increasing polarity:(a) Acetic acid (b) Cyclohexane (c) Diethyl etherarrow_forward
- (a) Which is the correct structure of the alkyl halide substrate? (b) Which is the correct structure of the nucleophile?arrow_forwardAttenol A and pinnatoxin A are natural products isolated from marine sources. (a) Locate the acetals, hemiacetals, imines, and enamines in both compounds. (b) Draw the hydrolysis product formed when attenol A is treated with aqueous acid. Include stereochemistry at all stereogenic centers.arrow_forwardArrange each group of compounds in order of increasing acidity.(a) phenol, ethanol, acetic acidarrow_forward
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