Concept explainers
(a)
Interpretation:
The IUPAC name for the given acid anhydride is to be written.
Concept introduction:
Acid anhydrides are of two types: symmetric and unsymmetric. In symmetric acid anhydride, the alkyl groups bonded to both carbonyl carbons are same i.e. formed from dehydration of two molecules of same carboxylic acid. The general form of symmetric acid anhydride name is alkanoic anhydride. In unsymmetric acid anhydride, the alkyl groups bonded to both carbonyl carbons are different i.e. formed from dehydration of two molecules of different carboxylic acids. The general form of unsymmetric acid anhydride name is alkanoic alkanoic anhydride. The two alkanoic groups appear in alphabetical order. The alkanoic corresponds to the specific carboxylic acid that could undergo dehydration to produce the anhydride. The ‘
(b)
Interpretation:
The IUPAC name for the given acid anhydride is to be written.
Concept introduction:
Acid anhydrides are of two types: symmetric and unsymmetric. In symmetric acid anhydride, the alkyl groups bonded to both carbonyl carbons are same i.e. formed from dehydration of two molecules of same carboxylic acid. The general form of symmetric acid anhydride name is alkanoic anhydride. In unsymmetric acid anhydride, the alkyl groups bonded to both carbonyl carbons are different i.e. formed from dehydration of two molecules of different carboxylic acids. The general form of unsymmetric acid anhydride name is alkanoic alkanoic anhydride. The two alkanoic groups appear in alphabetical order. The alkanoic corresponds to the specific carboxylic acid that could undergo dehydration to produce the anhydride. The ‘alkan’ is the root name stands for the longest chain containing the carbonyl group.
(c)
Interpretation:
The IUPAC name for the given acid anhydride is to be written.
Concept introduction:
The acid anhydrides are of two types symmetric and unsymmetric. In symmetric acid anhydride the alkyl groups bonded to both carbonyl carbons are same i.e. formed from dehydration of two molecules of same carboxylic acid. The general form of symmetric acid anhydride name is alkanoic anhydride. In unsymmetric acid anhydride the alkyl groups bonded to both carbonyl carbons are different i.e. formed from dehydration of two molecules of different carboxylic acids. The general form of unsymmetric acid anhydride name is alkanoic alkanoic anhydride. The two alkanoic groups appear in alphabetical order. The alkanoic corresponds to the specific carboxylic acid that could undergo dehydration to produce the anhydride. The ‘alkan’ is the root name stands for the longest chain containing carbonyl group.
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Organic Chemistry: Principles and Mechanisms (Second Edition)
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