4-Anisaldehyde

• 4-methoxybenzaldehyde
• P- methoxybenzaldehyde

Light-and air-sensitive, yellow liquid with a characteristic odor

Liquid

1.12 g · cm -3

0-2 ° C

247-249 ° C

1 mbar (20 ° C)

Poorly in water (2 g · l-1 at 20 ° C)

1.5731

Attention

1510 mg · kg -1 ( LD50, rat, oral)

Template: Infobox chemical / molecular formula search available

Anisaldehyde derived structurally from benzaldehyde and anisole from and belongs to the group of methoxybenzaldehyde.

Occurrence

In nature anisaldehyde is found in anise, fennel, and other essential oils. It is synthesized in plants via the Shikimisäureweg.

Production and representation

Anisaldehyde can be obtained by oxidation (e.g., with nitric acid or chromic acid ) or 4- methoxytoluene of anethole or anisole by a Vilsmeier reaction.

Properties

By reaction of anisaldehyde with oxidizing agents (eg Fehling's or Silver Mirror Test ) is anisic (p- methoxybenzoic acid ) can be represented.

Use

Anisaldehyde is used as an intermediate for synthesis of drugs, perfumes and other chemicals (such as Methoxybenzalaceton ).

Safety

The vapors of anisaldehyde can form (116 ° C, ignition temperature 220 ​​° C flash point) with air to form an explosive mixture.