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Chapter 7: Q57Q (page 332)

Question:

Show how you would prepare cyclohexene from each compound.

(a) cyclohexanol

(b) cyclohexyl bromide

(c) cyclohexane (not by dehydrogenation)

Short Answer

Expert verified

Cyclohexene can be prepared by dehydration of cyclohexanolby phosphoric acid (acid catalyst). This is one of the most common methods of preparing alkenes.

Step by step solution

01

Step by step solution:Step 1: (a)

Cyclohexene can be prepared by dehydration of cyclohexanolby phosphoric acid (acid catalyst). This is one of the most common methods of preparing alkenes.

02

(b)

Cyclohexene can be prepared by dehydration of cyclohexyl bromide to produce cyclohexene, with water and KBr as by products

03

(c)

Cyclohexane can be prepared by the reaction with bromine to give cyclohexyl bromide, then elimination with a bulky base like potassium tert-butoxide gives cyclohexene

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