Identify the unknown (A) in the reaction: | vedclass

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(A) The reaction involves a diol with a primary $(1^{\circ})$ alcohol group and a tertiary $(3^{\circ})$ alcohol group. Treatment with $TsCl$ (p-tolue

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(A) The reaction involves a diol with a primary $(1^{\circ})$ alcohol group and a tertiary $(3^{\circ})$ alcohol group. Treatment with $TsCl$ (p-toluenesulfonyl chloride) in pyridine at $0^{\circ}C$ is a selective reaction that converts the less sterically hindered primary alcohol into a tosylate $(OTs)$ group. The tertiary alcohol is much more sterically hindered and does not react under these mild conditions. Therefore,the primary alcohol group $-	ext{CH}_2	ext{OH}$ is converted to $-	ext{CH}_2	ext{OTs}$,while the tertiary alcohol group remains unchanged. This corresponds to the structure where the $-	ext{CH}_2	ext{OTs}$ group is attached to the cyclohexane ring.

Identify the unknown $(A)$ in the reaction:

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