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Chemistry · 2025 · 3 marks
CBSE 2025 · Region 4 · Set 2 · Q22
(a) Can sodium methoxide and t-butyl bromide be used for the preparation of t-butyl methyl ether. Give suitable reason. Justify your answer by…
(a)
Can sodium methoxide and t-butyl bromide be used for the preparation of t-butyl methyl ether. Give suitable reason. Justify your answer by suggesting the appropriate starting material if required for the preparation of t-butyl methyl ether.
(b)
Give the IUPAC name of above mentioned ether.
Marking-scheme solution
(a)
(a)
No
Sodium methoxide is a strong nucleophile as well as a strong base so elimination reaction of t-
butyl bromide predominates over substitution.
Methyl bromide and Sodium.t-butoxide / CH3Br and (CH3)3CONa
½ , ½
(b)$\displaystyle 2$-methoxy-$\displaystyle 2$-methylpropane
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CBSE Class 12 Chemistry past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.