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|Section3= }} Phenylpropanoic acid or hydrocinnamic acid is a carboxylic acid with the formula C9H10O2 belonging to the class of phenylpropanoids. It is a white, crystalline solid with a sweet, floral scent at room temperature. Phenylpropanoic acid has a wide variety of uses including cosmetics, food additives, and pharmaceuticals.〔S. M. Korneev "Hydrocinnamic Acids: Application and Strategy of Synthesis" Synthesis 2013, volume 45(8), pages 1000-1015. 〕 == Preparation and reactions== Phenylpropanoic acid can be prepared from cinnamic acid by hydrogenation.〔 Originally it was prepared by reduction with sodium amalgam in water and by electrolysis. A characteristic reaction of phenylpropanoic acid is its cyclization to indanones. When the side chain is homologated by the Arndt–Eistert reaction, subsequent cyclization affords 2-tetralone, derivatives.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Phenylpropanoic acid」の詳細全文を読む スポンサード リンク
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