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Ch. 12 - Substitution and Elimination: Reactions of Haloalkanes
Mullins - Organic Chemistry: A Learner Centered Approach 1st Edition
Mullins1st EditionOrganic Chemistry: A Learner Centered ApproachISBN: 9780137566471Not the one you use?Change textbook
Chapter 11, Problem 51f

Predict the product of the following reactions.
(f)

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1
Step 1: Identify the type of reaction. The presence of H2O suggests a nucleophilic substitution reaction, likely an SN1 mechanism due to the secondary alkyl bromide and the polar protic solvent (water).
Step 2: Determine the leaving group. Bromine (Br) is a good leaving group, and it will depart, forming a carbocation intermediate.
Step 3: Analyze the carbocation stability. The carbocation formed is secondary, but it is adjacent to a cyclopropyl group, which can stabilize the carbocation through hyperconjugation and ring strain relief.
Step 4: Predict the nucleophile's attack. Water (H2O) will act as the nucleophile and attack the carbocation, forming an alcohol group at the site of the carbocation.
Step 5: Consider stereochemistry. Since the reaction proceeds via an SN1 mechanism, the product will be racemic, meaning both enantiomers of the alcohol will be formed due to the planar nature of the carbocation intermediate.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Reaction Mechanisms

Understanding reaction mechanisms is crucial in organic chemistry as they describe the step-by-step process by which reactants transform into products. This includes identifying intermediates, transition states, and the movement of electrons. Familiarity with mechanisms helps predict the outcome of reactions and the stability of products formed.
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Functional Groups

Functional groups are specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules. Recognizing functional groups allows chemists to predict reactivity and the types of reactions that can occur. For example, alcohols, carboxylic acids, and amines each have distinct behaviors in chemical reactions.
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Stereochemistry

Stereochemistry involves the study of the spatial arrangement of atoms in molecules and how this affects their chemical behavior. It is essential for predicting the products of reactions, especially in cases where chirality or geometric isomerism is involved. Understanding stereochemistry helps in determining the specific isomers that may be formed during a reaction.
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