Viable route and DFT study for the synthesis of optically active limonaketone: A barely available natural feedstock in Cedrus atlantica
作者:Ayoub Abdelkader Mekkaoui、Hicham Ben El Ayouchia、Hafid Anane、Rachid Chahboun、Larbi El Firdoussi、Soufiane El Houssame
DOI:10.1016/j.molstruc.2021.130221
日期:2021.7
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
在本文中,我们报道了从柠檬烯,天然和低成本原料开始的光学活性柠檬烯酮(一种高附加值的单萜)的新颖,简便,有效的合成途径。该策略是通过出色的三步全合成柠檬烯酮开发的,柠檬烯酮是柠檬烯臭氧分解中潜在的重要中间体,在Cedrus Atlantica中几乎没有精油(0.1%收率)。第一步是柠檬烯的环氧化,产率为91%。所制备的柠檬烯氧化物的臭氧分解导致柠檬烯酮的特征酮功能的形成,产率为92%。最后的步骤是在Zn存在下通过脱氧进行的,并以定量收率得到柠檬烯酮。由柠檬烯有效地合成了光学纯的柠檬烯酮,总产率为84%。通过在M06-2X / 6-311G(d,p)(Zn的LANL2DZ)水平使用密度泛函理论(DFT)计算进行了分子电子密度理论(MEDT)分析,以了解在Zn-中观察到的化学选择性。脱氧反应及其相应的机理途径。