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Dehydrohalogenation for Alkenes

Assertion:-Te...

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Assertion:-Tert. butyl alcohol on heating with conc. H2SO4 at 413 K gives 2-methyl propane as the main product and not di-tert. butyl ether. Reason:- All alcohols are readily dehydrated with conc. H2S04.

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Q. Assertion :Tert-butyl methyl ether on treatment with HI at

100^{o} C

gives a mixture of methyl iodide and tert-butyl alcohol. Reason: This reaction occur via

S_{N} 2

Q. Assertion :tert-butyl alcohol undergoes acid catalysed dehydration readily than propanol. Reason:

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Q. When a mixture of t-butyl alcohol and ethyl alcohol is heated with conc.

H_{2} S O_{4},

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Q. Given below are two statements labelled as Assertion (A) and Reason (R).
Assertion (A): Di-tert-butyl ether cannot be prepared by Williamson's synthesis.

Reason (R): tert-butylbromide on treatment with sodium tert-butoxide preferentially undergoes elimination to from iso-butylene and tert-butyl alcohol.

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Dehydrohalogenation for Alkenes

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