Alcohols, Phenols and Ethers Mind Map

Alcohols contain an -OH group attached to an sp3 carbon, phenols contain an -OH group directly attached to an aromatic ring, and ethers contain an oxygen atom bonded to two carbon groups.

First locate the functional group, then decide whether oxygen is present as -OH or as -O- between two carbon groups.

Alcohols can be prepared by hydration of alkenes and reduction of aldehydes or ketones, while phenol is industrially prepared by the cumene process.

In preparation questions, identify the starting functional group first: alkene suggests addition of water, aldehyde or ketone suggests reduction, and cumene points to phenol.

Hydrogen bonding in alcohols and phenols increases boiling point and supports water solubility, especially for lower members.

For boiling point and solubility, always balance two effects: hydrogen bonding increases attraction, while a larger hydrocarbon group reduces water solubility.

Phenols are more acidic than alcohols because phenoxide ion is stabilised by resonance, whereas alkoxide ions do not get similar resonance stabilisation.

For acidity comparisons, compare conjugate-base stability, then mention resonance or substituent effect clearly.

Alcohols undergo reactions such as esterification, dehydration and oxidation, while phenols undergo electrophilic substitution reactions such as bromination, nitration and Reimer-Tiemann reaction.

Always include the reagent and condition because phenol can give different substitution products under different conditions.

Ethers are prepared by methods such as Williamson synthesis and undergo cleavage with hydrogen halides to form alcohols and alkyl halides, depending on the structure of the ether.

For Williamson synthesis, put the more hindered group in the alkoxide part and use a primary alkyl halide when possible.