57072-60-3Relevant articles and documents
Viable route and DFT study for the synthesis of optically active limonaketone: A barely available natural feedstock in Cedrus atlantica
Mekkaoui, Ayoub Abdelkader,Ben El Ayouchia, Hicham,Anane, Hafid,Chahboun, Rachid,El Firdoussi, Larbi,El Houssame, Soufiane
, (2021/03/24)
Herein, we report a novel, easy and efficient synthesis pathway of optically active limonaketone, a high added value monoterpene, starting from limonene, natural and low-cost feedstock. The strategy was developed in an excellent three-step total synthesis of limonaketone, potentially important intermediate in limonene ozonolysis and barely available in Cedrus atlantica essential oil (0.1% yield). The first step was the epoxidation of limonene which proceed in 91% yield. The ozonolysis of the prepared limonene oxide leads to the formation of the characteristic ketone function of limonaketone in 92% yield. The last step was performed by a deoxygenation in the presence of Zn and gave limonaketone in quantitative yield. The optically pure limonaketone has been efficiently synthesized from limonene and the overall yield was 84%. A molecular electron density theory (MEDT) analysis was carried out by using density functional theory (DFT) calculations at the M06–2X/6–311G(d,p) (LANL2DZ for Zn) level to understand the observed chemoselectivity in the Zn-deoxygenation reaction as well as its corresponding mechanistic pathway.
Identification and Synthesis of (Z)-(1'S,3'R,4'S)(-)-2-(3',4'-Epoxy-4'-methylcyclohexyl)-6-methylhepta-2,5-diene, the Sex Pheromone of the Southern Green Stinkbug, Nezara viridula (L.)
Baker, Raymond,Borges, Miguel,Cooke, Nigel G.,Herbert, Richard H.
, p. 414 - 416 (2007/10/02)
The sex pheromone of the male green stinkbug, Nezera viridula (L.) has been shown to be a novel epoxybisabolene (Z)-(1'S,3'R,4'S)(-)-2-(3',4'-epoxy-4'-methylcyclohexyl)6-methylhepta-2,5-diene, whose structure has been confirmed by spectroscopic studies and synthesis of the eight possible stereoisomers.
