2'-Methoxycinnamaldehyde

Описание

o-Methoxycinnamaldehyde has a sweet, warm, spicy-floral odor with fruity undertones. It has a sweet, spicy, warm flavor, somewhat pungent above 200 - 300 ppm. It is formed after a long contact period between salicylaldehyde and acetaldehyde in diluted alkaline solution; it can be formed by condensation of salicylaldehyde methylether with acetaldehyde under alkaline conditions; from the corresponding oxime.

Химические свойства

o-Methoxycinnamaldehyde has a sweet, warm, spicy-floral odor with fruity undernotes. It has a sweet, spicy, warm flavor and is somewhat pungent above 200 to 300?ppm.

Вхождение

Reported found in cinnamon oil (Cinnamomum cassia Nees ex Bl.) from which it is separated as stearoptene; in cinnamon bark and leaf.

Подготовка

It is formed after a long contact period between salicylaldehyde and acetaldehyde in diluted alkaline solution; it may also be formed by condensation of salicylaldehyde methylether with acetaldehyde under alkaline conditions; from the corresponding oxime. It may be isolated and purified from powdered cinnamon.

Общее описание

Yellow crystals.

Реакции воздуха и воды

Insoluble in water.

Профиль реактивности

Aldehydes, such as 2'-Methoxycinnamaldehyde, are frequently involved in self-condensation or polymerization reactions. These reactions are exothermic; they are often catalyzed by acid. Aldehydes are readily oxidized to give carboxylic acids. Flammable and/or toxic gases are generated by the combination of aldehydes with azo, diazo compounds, dithiocarbamates, nitrides, and strong reducing agents. Aldehydes can react with air to give first peroxo acids, and ultimately carboxylic acids. These autoxidation reactions are activated by light, catalyzed by salts of transition metals, and are autocatalytic (catalyzed by the products of the reaction). The addition of stabilizers (antioxidants) to shipments of aldehydes retards autoxidation.

Пожароопасность

2'-Methoxycinnamaldehyde is flammable.