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Chapter 11: Q 11-11-20 P-b (page 347)

Tell whether each of the following reactions is likely to be SN1, SN2, E1, E1cB or E2:

b)

Short Answer

Expert verified

b) The given reaction is an E2 reaction

Step by step solution

01

E2 reaction

An E2 reaction occurs when a base attacks the beta hydrogen of an alkyl halide, which leads to the loss of leaving group.An E2 product formed is alkene.

02

Whether the reaction is SN1, SN2, E1, E1cB or E2

a) The given reaction occurs by an E2 mechanism because the substrate of the reaction is secondary halide, and it reacts with a strong base KOH. The product formed is an elimination product.

An E2 reaction

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Most popular questions from this chapter

Which reactant in each of the following pairs is more nucleophilic? Explain.

a) BF3 or F-

Question: Order each of the following sets of compounds with respect to reactivity:

Question: Propose structures for compounds that fit the following descriptions:

(b) An organohalide that will not undergo nucleophilic substitution

Methyl esters (RCO2CH3) undergo a cleavage reaction to yield carboxylate ions plus iodomethane on heating with LiI in dimethylformamide:

The following evidence has been obtained: (1) The reaction occurs much faster in DMF than in ethanol. (2) The corresponding ethyl ester (RCO2CH2CH3) cleaves approximately 10 times more slowly than the methyl ester. Propose a mechanism for the reaction. What other kinds of experimental evidence could you gather to support your hypothesis?

Question: What stereochemistry do you expect for the alkene obtained by E2 elimination of (1R, 2R)-1,2-dibromo-1,2-diphenylethane? Draw a Newman projection of the reacting conformation.
See all solutions

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