Write the reactions of Williamson synthesis of 2-ethoxy-3-methylpentane starting from ethanol and 3-methylpentan-2-ol.

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Solution

In Williamson synthesis, an alkyl halide reacts with an alkoxide ion. Also, it is an S_N2 reaction. In the reaction, alkyl halides should be primary having the least steric hindrance. Hence, an alkyl halide is obtained from ethanol and alkoxide ion from 3-methylpentan-2-ol.

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Write the chemical equations for Williamson synthesis of 2 - Ethoxy - 2 - methyl - pentane starting from

ethanol and 2 - Methylpentan - 2 - ol .

Write structures of the compounds whose IUPAC names are as follows:

(i) 2-Methylbutan-2-ol

(ii) 1-Phenylpropan-2-ol

(iii) 3,5-Dimethylhexane −1, 3, 5-triol

(iv) 2,3 − Diethylphenol

(v) 1 − Ethoxypropane

(vi) 2-Ethoxy-3-methylpentane

(vii) Cyclohexylmethanol

(viii) 3-Cyclohexylpentan-3-ol

(ix) Cyclopent-3-en-1-ol

(x) 3-Chloromethylpentan-1-ol.

Write structures of the compounds whose IUPAC names are as follows.
(a). 2-methylbutan-2-ol

(b). 1-phenylpropan-2-ol

(c). 3,5-dimethylhexane-1,3,5-triol

(d). 2,3-diethylphenol

(e). 1-ethoxypropane

(f). 2-ethoxy-3-methylpentane

(g). Cyclohexylmethanol

(h). 3-cyclohexylpentan-3-ol

(i). Cyclopent-3-en-1-ol

(j). 3-chloromethylpentan-1-ol

Which of the following represents the correct IUPAC name for the compounds concerned?

2, 2-Dimethylpentane or 2-Dimethylpentane

2,4,7- Trimethyloctane or 2,5,7- Trimethyloctance

2-Chloro-4-methylpentane or 4-Chloro-2-methylpentane

But-3-yn-1-ol or But-4-ol-1-yne

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