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.