Verbenone in the synthesis of o-menth-1-en-3-one and 5,7,7-trimethylazabicyclo[4.1.1]octane derivatives
摘要:
At treatment with sulfuric acid in acetonitrile solution the verbenone (4,6,6-trimethylbicyclo[3.1.1]hept-3-en-2-one) suffers an opening of the four-membered ring with the rupture of the C-1-C-6 bond of the pinane skeleton and transforms into o-menthene derivatives, o-mentha-1,6-dien-3-one and 8-acetamido-o-menth-1-en-3-one, whose ratio depends on the reaction conditions. E- and Z-isomers of verbenone oxime under the same conditions undergo the Beckmann rearrangement leading to the formation of 5,7,7-trimethyl-3-azabicyclo[4.1.1]oct-4-en-2-one and 5,7,7-trimethyl-2-azabicyclo[4.1.1]oct-4-en-3-one, respectively.
Synthesis and Biological Activity of Novel (Z)- and (E)-Verbenone Oxime Esters
作者:Qiong Hu、Gui-Shan Lin、Wen-Gui Duan、Min Huang、Fu-Hou Lei
DOI:10.3390/molecules22101678
日期:——
derivatives bearing an oxime ester moiety were designed and synthesized in search of novel bioactive molecules. Their structures were confirmed by UV-Vis, FTIR, NMR, ESI-MS, and elemental analysis. The antifungal and herbicidal activities of the target compounds were preliminarily evaluated. As a result, compound (E)-4n (R = β-pyridyl) exhibited excellent antifungal activity with growth inhibition percentages
Synthesis of (<i>E</i>)/(<i>Z</i>)-Verbenone Oxime Ethers and Photoresponsive Behavior to Herbicidal Activity
作者:Yucheng Cui、Xiaoyu Wang、Guishan Lin、Wengui Duan、Xiaocui Wu、Hailang Lan、Baoyu Li
DOI:10.1021/acs.jafc.2c05766
日期:2022.11.2
to explore a photoresponsive herbicide, whose activity can be weakened under the action of light to reduce the negative effect. To this purpose, a series of (E)/(Z)-verbenone oximeethers were designed, synthesized, and characterized. Oximeether groups were adopted as the trigger switches. The preliminary screening for herbicidal activity showed that some of them exhibited better or comparable effects
残留活性除草剂在环境中的积累会导致一系列问题。因此,探索一种光响应性除草剂,在光的作用下可以减弱其活性以减少负面影响,具有重要意义。为此,设计、合成和表征了一系列( E )/( Z )-马鞭草酮肟醚。采用肟醚基作为触发开关。对除草活性的初步筛选表明,其中一些除草剂对芸苔和稗草的效果优于市售除草剂氟咪嗪。同时,五对目标化合物具有显着不同的除草效果进一步研究了E - 和Z -形式的可逆异构化反应和伴随的除草活性变化。结果,最大转化率约为50%,所得E-和Z-异构体混合物的除草效果显着降低。初步探讨了一对异构体( E ) -4a和( Z ) -4a的光转化机理。此外,合理有效的 3D 定量构效关系模型(r 2 = 0.984 和q 2= 0.571) 建立,结合模式也通过分子对接进行了研究。
Verbenone in the synthesis of o-menth-1-en-3-one and 5,7,7-trimethylazabicyclo[4.1.1]octane derivatives
作者:S. S. Koval’skaya、N. G. Kozlov
DOI:10.1134/s1070428006080082
日期:2006.8
At treatment with sulfuric acid in acetonitrile solution the verbenone (4,6,6-trimethylbicyclo[3.1.1]hept-3-en-2-one) suffers an opening of the four-membered ring with the rupture of the C-1-C-6 bond of the pinane skeleton and transforms into o-menthene derivatives, o-mentha-1,6-dien-3-one and 8-acetamido-o-menth-1-en-3-one, whose ratio depends on the reaction conditions. E- and Z-isomers of verbenone oxime under the same conditions undergo the Beckmann rearrangement leading to the formation of 5,7,7-trimethyl-3-azabicyclo[4.1.1]oct-4-en-2-one and 5,7,7-trimethyl-2-azabicyclo[4.1.1]oct-4-en-3-one, respectively.