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31/01/2022 2:55 pm
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The major product obtained in the photo catalysed bromination of 2-methyl butane is
(a) 1-bromo-2-methyl butane
(b) 1-bromo-3-methyl butane
(c) 2-bromo-3-methyl butane
(d) 2-bromo-2-methyl butane
1 Answer
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31/01/2022 3:01 pm
Answer is (d) 2-bromo-2-methyl butane
Explanation
The order of substitution in different alkanes is 3° > 2° > 1°
Thus the bromination of 2-methyl butane mainly gives 2-Bromo - 2 - methyl butane
\(CH_3-CH_2-\overset{CH_3}{\overset{|}{CH}}-CH_3\) \(\underset{Br_2}\longrightarrow\) \(CH_3-CH_2-\overset{CH_3}{\overset{|}{CH}}-CH_2Br\) \(+CH_3 - CH_2 - \overset{CH_3}{\overset{|}{\underset{Br}{\underset{|}{C}}}}-CH_3\)
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