Ionone can be synthesised from citral and acetone with calcium oxide as a basic heterogeneous catalyst and serves as an example of an aldol condensation followed by a rearrangement reaction. [6] [7]The nucleophilic addition of the carbanion 3 of acetone 1 to the carbonyl group on citral 4 is base catalysed.The aldol condensation product 5 …

紫罗兰酮（α-Ionone）是一种有机化合物，分子式为C13H20O，无色至微黄色液体。呈暖的木香和具有较强的紫罗兰香气。稀释后呈鸢尾根香气，再与乙醇混合，则呈紫罗兰香气。香味比p紫罗兰酮好。沸点237℃，闪点115℃。不溶于水和甘油，溶于乙醇、丙二醇、大多数非挥发性油和矿物油。

香堇酮（Ionone），是一种萜类物质，根据双键位置不同有三种异构体。 香堇酮的词源是希腊语 Ίον （ Íon ），意思是香堇菜。 中文常將香菫菜誤譯為紫羅蘭，兩者實為不同物種，而香堇酮也常被译作紫罗兰酮。. 香堇酮属于玫瑰酮，存在于包括玫瑰精油的多种花精油中。

2025年3月29日 · 紫罗兰酮（Ionone），是一种萜类物质，根据双键位置不同有三种异构体。 中文常将香堇菜误译为紫罗兰，两者实为不同物种，而紫罗兰酮也常被译作紫罗兰酮。

紫罗兰酮（Ionone），又称香堇酮，是一种萜类物质，根据双键位置不同有三种异构体。香堇酮的词源是希腊语Ίον（Íon），意思是香堇菜。中文常将香堇菜误译为紫罗兰，两者实为不同物种。 紫罗兰酮属于玫瑰酮，存在于包括玫瑰精油的多种花精油中。

Ionone is a ketone compound composed of 13 carbons with a monocyclic terpenoid backbone . The term ionone derived from “iona” (Greek for violet) referring to the violet scent and “ketone” in relation to its structure . Several isomeric ionones exist in …

2020年12月10日 · The term ionone is derived from "iona" (Greek for violet) which refers to the violet scent and "ketone" due to its structure. Ionones can either be chemically synthesized or endogenously produced via asymmetric cleavage of β-carotene by β-carotene oxygenase 2 (BCO2). We recently proposed a possible metabolic pathway for the conversion of α ...

2021年4月12日 · β-Ionone is a natural plant volatile compound, and it is the 9,10 and 9',10' cleavage product of β-carotene by the carotenoid cleavage dioxygenase. β-Ionone is widely distributed in flowers, fruits, and vegetables. β-Ionone and other apocarotenoids comprise flavors, aromas, pigments, growth regulators, and defense compounds; serve as ecological cues; have roles as insect attractants or ...

ionone (VII) lowers the intensity of the dienone band at 278 m μ to 4500, which is about one-quarter of the intensity of the “apparent” model (VIII) 2.In fact, because of the low intensity, some workers 3 were of the view that the structure (VII) was incorrect, or that the dienone was impure, but β-ionone (IX) absorbs at an intermediate value (H—Me overlap) and there is now ample ...

α-紫罗酮的介绍 α-紫罗酮（Ionone）是一种萜类物质，根据双键位置不同有三种异构体。 α-紫罗酮属于玫瑰酮，存在于包括玫瑰精油的多种花精油中。β-紫罗兰酮是玫瑰香气的主要贡献物，虽然其在精油中含量相对较低。