Predict the product of the following reactions.
(b)

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Step 1: Analyze the reactants. The starting material is a cyclobutyl compound with a chlorine atom attached to a secondary carbon. The reagent is isopropanol (CH3CHOHCH3), which can act as a nucleophile and solvent.

Step 2: Consider the reaction mechanism. Since the substrate is a secondary alkyl halide, the reaction could proceed via an SN1 or SN2 mechanism. However, the bulky cyclobutyl group and the polar protic solvent (isopropanol) favor the SN1 mechanism.

Step 3: In an SN1 mechanism, the first step is the formation of a carbocation. The chlorine atom leaves, generating a cyclobutyl carbocation. This step is the rate-determining step.

Step 4: The carbocation formed is relatively stable due to the ring strain in cyclobutane, which can stabilize the positive charge. The nucleophile (isopropanol) then attacks the carbocation, forming a new bond.

Step 5: After the nucleophilic attack, a proton is lost from the isopropanol group, resulting in the formation of the final product, which is an ether. The product will have the cyclobutyl group attached to the oxygen atom of the isopropanol.

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