JEE Main 2010 — Hydrocarbons Question with Solution
From: AIEEE 2010
Question
The main product of the following reaction is
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Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
Whenever dehydration can produce two different alkenes, major product is formed according to Saytzeff rule i.e. more substituted alkene (alkene having lesser number of hydrogen atoms on the two doubly bonded carbon atoms ) is the major product.
Such reactions which can produce two or more structural isomers but one of them in greater amounts than the other are called regioselective; in case a reaction is % regioselective, it is termed as regiospecific.
In addition to being regioselective, alcohol dehydrations are stereoselective (a reaction in which a single starting material can yield two or more stereoismeric products, but gives one of them in greater amount than any other ).
Such reactions which can produce two or more structural isomers but one of them in greater amounts than the other are called regioselective; in case a reaction is % regioselective, it is termed as regiospecific.
In addition to being regioselective, alcohol dehydrations are stereoselective (a reaction in which a single starting material can yield two or more stereoismeric products, but gives one of them in greater amount than any other ).
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This is a previous-year question from JEE Main 2010, covering the Hydrocarbons chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.