JEE Main Chemistry question

ChemistryHaloalkanes and HaloarenesJEE Main

How many of the following compounds will give an reaction upon treatment with alc. KOH solution? (seven structures, i–vii, including cyclohexyl halides, a neopentyl-type halide, and )

Answer: 3

Solution

elimination requires at least one -hydrogen positioned (or accessible in some conformation) anti-periplanar to the leaving halogen. Structures lacking any -hydrogen at all (such as a halide on a carbon whose only neighbouring carbon

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Question ID VK-148402