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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

Dehydrohalogenation of 1-chloro-1-methyl cyclopropane affords two alkenes (A and B) as products. Explain why A is the major product despite the fact that it contains the less substituted double bond.

In the dehydrohalogenation of bromocyclodecane, the major product is cis-cyclodecene rather than trans-cyclodecene. Offer an explanation.

Explain the selectivity observed in the following reactions.

Classify each alkene in the following vitamins by the number of carbon substituents bonded to the double bond.

a.

b.

a. Draw three-dimensional representations for all stereoisomers of 2-chloro-3-methylpentane, and label pairs of enantiomers.

b. Considering dehydrohalogenation across C2 and C3 only, draw the E2 product that results from each of these alkyl halides. How many different products have you drawn?

c. How are these products related to each other?
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