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Q. Major products formed in the reaction of $t$-butyl methyl ether with $HI$ are

KVPYKVPY 2014Alcohols Phenols and Ethers

Solution:

Major products formed when $t$-butyl methyl ether reacts with $HI$ are tert-butyl iodide and methanol.
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The cleavage of $C—O$ bond in ethers takes place under drastic conditions with excess of hydrogen halide, $HX$. This reaction follows $S_N1$ mechanism.