C 13 H 20 O (192.30). A general term that includes various isomers, of which α-ionone and β-ionone are the most representative. A mixture was isolated from Boronia megastigma of the Rutaceae family, but it is usually synthesized by condensation of citral and acetone. α-ionone has a boiling point of 127°C (1.6 kPa). λ max 229 nm (ε 14,300). β-ionone has a boiling point of 134°C (1.6 kPa). λ max 294 nm (ε 87,000). It is used in fragrances as a substitute for iron, and β-ionone is used as a raw material for the synthesis of vitamin A. Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition |
C13H20O(192.30).各種異性体を含む総称であり,代表的なものとして,α-イオノンとβ-イオノンがある.混合物がミカン科Boronia megastigmaから単離されたが,通常,シトラールとアセトンの縮合などにより合成する.α-イオノンは沸点127 ℃(1.6 kPa).λmax 229 nm(ε 14300).β-イオノンは沸点134 ℃(1.6 kPa).λmax 294 nm(ε 87000).イロンの代用として香料に用い,またβ-イオノンはビタミンAの合成原料に用いられる. 出典 森北出版「化学辞典(第2版)」化学辞典 第2版について 情報 |
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