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The names of a few ethers are given as examples in Table 7.2. (i) 4-Chloro-2,3-dimethylpentan-1-ol (ii) 2-Ethoxypropane (iii) 2,6-Dimethylphenol (iv) 1-Ethoxy-2-nitrocyclohexane
In IUPAC, system, alcohol or alkanols are named by replacing the last word ‘e’ of the corresponding alkane by ‘ol’. e.g., Preparation of Alcohols. From alkenes. By acid catalysed hydration in accordance with Markownikoff’s rule. By reduction of carboxylic acids and ester.
The names of a few ethers are given as examples in Table 11.2. (i) 4-Chloro-2,3-dimethylpentan-1-ol (ii) 2-Ethoxypropane (iii) 2,6-Dimethylphenol (iv) 1-Ethoxy-2-nitrocyclohexane
The ether IUPAC name (systematic) uses a smaller group named as an alkoxy substituent and the more complex group as the root name, with the oxygen atom. The above-given examples are methoxyethane (methyl-ethyl-ether), ethoxyethane (diethyl-ether), 2-methoxy-2-methylpropane (MTBE), and phenoxybenzene (diphenyl-ether).
All the solutions given in this page are solved based on CBSE Syllabus and NCERT guidelines. INTEXT Questions. Question 1. Classify the following as primary, secondary and tertiary alcohols : Solution: Primary alcohols : (i), (ii) and (iii) Secondary alcohols : (iv) and (v) Tertiary alcohols : (vi) Question 2.
ALCOHOLS, PHENOLS AND ETHERS. Quick Concepts to Remember. Hydroxyl (− OH) derivatives of alkane are called alcohols. Alcohols are classified as 1o, 2oand 3o. −OH group is attached to sp3 hybridized carbon. Alcohols further may be monohydric, dihydric and polyhydric on the basis of OH group.
NCERT Solutions for Class 12 Chemistry Chapter 11 Alcohols, Phenols and Ethers Q 11.18: Explain the following with an example. (i) Kolbe’s reaction. (ii) Reimer-Tiemann reaction. (iii) Williamson ether synthesis. (iv) Unsymmetrical ether. Solution: (i) Kolbe’s reaction: Sodium phenoxide is formed when phenol is treated with sodium hydroxide.
