Syringaldehyde

• 3,5-dimethoxy -4-hydroxybenzaldehyde
• 4-hydroxy- 3 ,5- dimethoxybenzaldehyde
• Syringaldehyde

Beige to pale yellow needles

Fixed

110-113 ° C

192-193 ° C (14 mmHg)

• Insoluble in water
• Slightly soluble in petroleum ether
• Insoluble in ethanol, ether, and glacial acetic acid

Attention

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Syringaldehyde, more rarely, syringaldehyde is a naturally occurring chemical compound from the group of phenols and aldehydes. The name of the aldehyde dates - analogous to syringol, Syringaalkohol, syringic or acetosyringone - from the Latin name of the lilac (Syringa ).

History and habitat

The aldehyde was first obtained in 1899 from occurring in Lilac Syringa vulgaris glucoside Syringin by oxidation and hydrolysis. Syringaldehyde occurs naturally in pineapples, beer, brandy, rum, many different types of whiskey, sherry, roasted barley and hardwood smoke.

Production and representation

Syringaldehyde can be obtained by reaction of a solution of 5- Bromvanillin in dimethylformamide with sodium methoxide, and copper ( I) chloride.

Also possible is the synthesis by the Duff reaction:

Properties and Uses

Syringaldehyde is a beige to yellow but, crystallizing in needles solid which is insoluble in water, dissolves in ethanol, ether and glacial acetic acid. The aldehyde is used as an intermediate in chemical syntheses and as a fragrance in the perfume.