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Preparation of Carboxylic Acids

Oxidative ozo...

Question

Oxidative ozonolysis of $2$ -butene in the presence of zinc or dimethyl sulphide gives:

A

C H_{3} C H O

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B

C H_{3} C O O H

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C

C O_{2}

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D

(C H_{3})_{2} C O

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Solution

The correct option is A $C H_{3} C H O$
Oxidative ozonolysis of $2$ -butene in the presence of Zn or dimethyl sulphide forms acetaldehyde.
The reaction is as follows:
$C H_{3} - C H = C H - C H_{3} O_{3} - -------------- \to Zn or dimethyl sulphide 2 C H_{3} C H O$

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Similar questions

Q. From the list of alkenes given below, identify the alkenes which on ozonolysis give only ketones.
(a) 2 methyl-1-butene
(b) 1-butene
(c) 2,3-dimethyl-2-butene
(d) 3-methyl-2-pentene
(e) 3,4-dimethyl-3- hexene
(f) 2,5-dimethyl-2,4-hexadiene

The olefin which on ozonolysis gives $C H_{3} C H_{2} C H O and C H_{3} C H O$ is:

Q. From the list of alkenes given below, identify the alkenes which on reductive ozonolysis given only ketones.
(a) 2-methyl-1-butene
(b) 1-butene
(c) 2,3-dimethyl-2-butene
(d) 3-methyl-2-pentene
(e) 3,4-dimethyl-3-hexene
(f) 2,5-dimethyl-2,4-hexadiene

Q. The major products obtained during ozonolysis of

2, 3 - d i m e t h y l - 1 - b u t e n e

and subsequent reductions with

Z n

H_{2} O

Q. Statement 1: The sulphide ore is converted into its oxides in the absence of air.
Statement 2: The carbonate ores is converted into oxides in the presence of excess air.

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