反応 #985269

反応方程式

vanillin

malonic acid

→

ferulic acid

反応条件

後処理

1. 1
   その他obtained
2. 2
   その他by purifying the clove oil
3. 3
   その他to isolation and purification
4. 4
   その他may be prepared by, for example

実験手順

Ferulic acid is a compound contained, as an ester thereof, in natural substances, particularly plants such as rice and adlay and may be obtained as a purified product from such a plant or a synthesized product industrially obtained. A ferulic ester is obtained in a hydrous ethanol fraction after rice bran oil obtained from rice bran is partitioned with hydrous ethanol and hexane at room temperature under weakly alkaline conditions. Ferulic acid can be obtained by hydrolyzing the ferulic ester obtained by the above-described process with sulfuric acid with heating under pressure and purifying the resultant hydrolyzate or by culturing Pseudomonas in a medium containing clove oil from buds and leaves of Syzygium aromaticum MERRILL et PERRY, Myrtaceae by steam distillation, or eugenol obtained by purifying the clove oil and subjecting the medium to isolation and purification. When ferulic acid is prepared by chemical synthesis, it may be prepared by, for example, a condensation reaction of vanillin and malonic acid (Journal of American Chemical Society, 74, 5346, 1952).

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