1.

Dehydration of alcohols is suitable for preparing ethers having primary alkyl groups only. Comment

Answer»

Solution :During DEHYDRATION of alcohol the ALKYL group should be unhindered and the temperature be kept low. Otherwise the reaction FAVOURS the formation of alkene. The reaction follows `S_N1` pathway when the alcohol is SECONDARY or tertiary.
However, the dehydration of secondary and tertiary alcohols to give corresponding ethers is unsuccessful as elimination competes over substitution and as a CONSEQUENCE, alkenes are easily formed.


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