Substance Introduction
A class of compounds with hydroxyl groups attached to the side chains of aromatic hydrocarbons. Aromatic alcohols and phenols have different structures (phenolic hydroxyl groups are directly linked to aromatic rings) and different properties.
Aromatic alcohols have aromatic odor, slightly soluble in water, insoluble in alkali solution, and their chemical properties are similar to those of fatty alcohols. Aromatic alcohols can react with metal sodium to form sodium alkoxide:
Aromatic alcohols are also easily oxidized to aromatic aldehydes or ketones, and some aromatic alcohols can also be oxidized to aromatic acids by strong oxidants. For example:
Aromatic alcohols and Phosphorus pentachloride It reacts to generate chloride, and reacts with anhydride to generate ester: Many aromatic alcohols exist in nature in the form of esters, such as benzyl alcohol esters often exist in Peruvian gum, Toulu gum and essential oils. Aromatic alcohols are Synthetic drugs And spices. It also has some fragrance The main component of rose oil, which has a fragrant smell, is often used as a perfume in cosmetics.
In addition to being derived from the natural world, aromatic alcohols can also be obtained by synthesis, which is similar to that of fatty alcohols. For example, side chain halogenated aromatic hydrocarbons can be boiled with alkaline aqueous solution to obtain aromatic alcohols:
The reduction of aromatic aldehydes or ketones can also be used to prepare aromatic alcohols:
