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|Section2= }} Piperic acid is a chemical often obtained by the base-hydrolysis of the alkaloid piperine from black pepper,〔http://chestofbooks.com/health/aromatherapy/The-Volatile-Oils-Vol1/Heliotropin.html〕 followed by acidification of the corresponding salt.〔http://www.erowid.org/archive/rhodium/chemistry/3base/piperonal.pepper/degradation.piperine/index.html〕 Piperic acid is an intermediate in the synthesis of other compounds such as piperonal, and as-such may be used to produce fragrances, perfumes flavorants and drugs as well as other useful compounds. ==Preparation== Piperic acid can be prepared from the commercially-available alkaloid piperine, a cyclic amide containing a piperidine group, by reacting it with a hydroxide such as potassium hydroxide, then acidifying the formed piperate salt with hydrochloric acid or another acid. The toxic compound piperidine is given off during the base-hydrolysis of piperine and as-such, safety precautions should be taken. : 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「Piperic acid」の詳細全文を読む スポンサード リンク
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