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How to Draw Mechanisms

Ketones [ R...

Question

Ketones $[R - C | | O - R^{'}]$ where, $R = R^{'} =$ alkyl group can be obtained in one step by :

A

hydrolysis of esters

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B

oxidation of primary alcohols

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C

oxidation of secondary alcohols

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D

reaction of acid halide with alcohols

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Solution

The correct option is C oxidation of secondary alcohols
Oxidation of secondary alcohol. yield ketones.

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Similar questions

(R - O | | C - R^{'})

can be obtained in one step by:

R

R^{'}

are alkyl groups)

(R_{1} C O R_{2})

R_{1} = R_{2} =

alkyl group, can be obtained in one step by:

Q. Primary alcohols can be obtained from the reaction of

R M g X

followed by hydrolysis with:

Q. Carbon - oxygen bond in ethers can be cleaved by halogen acids, sulphuric acid, phosphorouspentachloride etc. The cleavage of

C - O

bond takes place under drastic conditions with an excess of hydrogen halide,

R - O - R + 2 H X \to 2 R X + H_{2} O

If hydrogen halide is not taken in excess, then one molecule each of alcohol and alkyl halide are formed,

R - O - R + H I 373 K \to R - O H + R - I

. The order of reactivity of hydrogen halides towards the above-mentioned reaction depends on the bond strength of halogenated acids. Weaker is the

H - X

bond, greater is its reactivity. In a case of unsymmetrical ethers, the site of cleavage is such that the halide is formed from the alkyl group which is tertiary so that the halide formed is tertiary halide.

Indicate whether the following statements / reactions are true or false.
Hydrogen fluoride is not effective in ether cleavage.

Q. In the reaction:

A r - O H R - X - -- \to alkali A

(where R is a primary alkyl group)

The product 'A' is:

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