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Chapter 8: Q.18 (page 317)

Draw the major E2 elimination products from each of the following alkyl halides.

a.

b.

Short Answer

Expert verified

The major E2 products from the alkyl halides are shown below:

Step by step solution

01

Types of different β hydrogens

The different types of 尾hydrogens give different types of products.

Representation of beta Hydrogens

02

Anti-periplanar position

The leaving group and 尾hydrogen must be trans to each other(anti-periplanar position). The elimination reaction will take place in those where anti-periplanar orientation is maintained.

Representation of anti-periplanar orientation

03

Elimination products

Hence, the major E2 products from the alkyl halides are shown below:

Elimination product from a

By maintaining the anti-periplanar geometry, only one possible product is obtained.

Elimination product from b

Only one possible product is obtained while maintaining the anti-periplanar geometry.

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Most popular questions from this chapter

Under certain reaction conditions, 2,3-dibromobutane reacts with two equivalents of base to give three products, each of which contains two new bonds. Product A has two sp hybridized carbon atoms, product B has one sphybridized carbon atom, and product C has none. What are the structures of A, B, and C?

What alkyl chloride affords the following alkene exclusively under E2 reaction conditions?

Explain why cis-1-chloro-2-methylcyclohexane undergoes E2 elimination much faster than its trans isomer.

Consider an E2 reaction between CH3CH2Brand KOC(CH3)3. What effect does each of the following changes have on the rate of elimination? (a) The base is changed to KOH. (b) The alkylhalide is changed to CH3CH2Cl.

Draw a stepwise, detailed mechanism for each reaction.

a.

b.
See all solutions

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