13C NMR spectral analyses, and their pre-emergence herbicidalactivities against ryegrass were evaluated. All of the compounds showed excellent herbicidalactivity. The Schiff bases showed stronger herbicidalactivities than the original amine 4. These compounds showed herbicidalactivities comparable to that of glyphosate. The herbicidalactivities of 5k and 5l against ryegrass shoot growth were 78
对p -Menth-3-en-1-amine 4及其Schiff碱衍生物5a - 1进行了设计和合成。通过FT-IR,ESI + -MS,HRMS,1 H NMR和13 C NMR光谱分析对其进行了表征,并评估了它们对黑麦草的芽前除草活性。所有化合物均表现出优异的除草活性。Schiff碱比原始胺4具有更强的除草活性。这些化合物显示出与草甘膦相当的除草活性。5k和5l的除草活性对抗黑麦草芽的生长分别比草甘膦高78.3%和355.6%。此外,向含呋喃或苯环的席夫碱衍生物中引入氯或溴原子有利于提高活性。然而,当五元杂环席夫碱的杂原子或吡啶席夫碱上的取代基的位置改变时,除草活性并未受到明显影响。
An efficient synthesis method targeted to a novel aziridine derivative of <i>p</i>-menthane from turpentine and its herbicidal activity
作者:Shou-Ji Zhu、Shi-Chao Xu、Zhen-Dong Zhao
DOI:10.1080/14786419.2017.1280494
日期:2017.7.3
A novel aziridine compound N-acetyl-1,2-azacyclo-p-menthane d was synthesised using turpentine as raw material and characterised by FT-IR, 1H NMR, 13C NMR, ESI+-MS and HRMS. The pre-emergence herbicidal activities of d and its synthetic intermediates cis- and trans-N,N′-diacetyl-p-menthane-1,8-diamine (b2 and b1) were determined. The result showed that d exhibited much higher herbicidal activities
以松节油为原料合成了新型氮丙啶化合物N-乙酰基-1,2-氮杂环-对-薄荷烷d,并用FT-IR,1 H NMR,13 C NMR,ESI + -MS和HRMS进行了表征。测定了d及其合成中间体顺式和反式N,N'-二乙酰基-p-薄荷烷-1,8-二胺(b2和b1)的出芽前除草活性。结果表明d对b黑麦草,一年生黑麦草,Digitaria sanguinalis和Ixeris的除草活性远高于b2和b。b1。该IC 50的d针对这三种植物的根和枝条生长均低于1毫摩尔大号-1。与此相反,该IC 50的B1和B2对这些植物的根和枝条生长均大于10毫摩尔大号-1。