Synthesis and herbicidal activity of O,O-dialkyl phenoxyacetoxyalkylphosphonates containing fluorine
作者:Ting Chen、Ping Shen、Yanjun Li、Hongwu He
DOI:10.1016/j.jfluchem.2005.11.013
日期:2006.2
A series of substituted phenoxyacetoxyalkylphosphonates bearing fluorine were designed and synthesized. All the new compounds were identified by elemental analysis, IR, 1H NMR and MS and were tested for herbicidal activity in greenhouse at a rate of 1.5 kg/ha. The results of preliminary bioassay showed that fluorine moiety introduced to the core structure could help to improve the herbicidal activity
设计并合成了一系列带有氟的取代苯氧基乙酰氧基烷基膦酸酯。通过元素分析,IR,1 H NMR和MS鉴定了所有新化合物,并以1.5 kg / ha的速率测试了温室中的除草活性。初步生物测定的结果表明,引入核心结构的氟部分可以帮助提高除草活性,苯环中带有3-三氟甲基的化合物表现出更高的抑制活性。
Synthesis and characterization of ytterbium guanidinates stabilized by bridged bis(phenolate) ligand and their application for the hydrophosphonylation reaction of aldehydes
gave the expected ytterbium guanidinato complexes LYb[R2NC(NR1)2] [R1 = Cy, R2N = N(TMS)2 (1), N(CH2)5 (2); R1 = iPr, R2N = N(TMS)2 (3), NPh2 (4)]. These ytterbiumcomplexes were well characterized by elemental analyses, IR spectroscopy and single-crystal X-ray structure determination. The metal ion is six-coordinated by two oxygen and two nitrogen atoms from the bis(phenolate) ligand, and two nitrogen
制备了一系列由胺桥联的双酚盐配体稳定的胍基配合物,并探讨了其对醛的羰基化反应的催化性能。复分解胺桥连的双反应(酚盐)镱氯化物LYbCl(THF)[L =我2 NCH 2 CH 2 N CH 2 - (2-OC 6 H ^ 2吨卜2 -3,5-)} 2 ]与相应的胍基锂在THF中的摩尔比为1:1,得到了预期的胍基络合物LYb [R 2 NC(NR 1)2 ] [R 1 = Cy,R 2 N = N(TMS)2(1),N(CH 2)5(2); R 1 = i Pr,R 2 N = N(TMS)2(3),NPh 2(4)]。这些element配合物通过元素分析,红外光谱和单晶X射线结构测定得到了很好的表征。金属离子由双(酚盐)配体的两个氧和两个氮原子与一个胍基的两个氮原子六配位。around周围的配位几何可描述为扭曲的八面体。已发现这些these胍基络合物是在温和条件下用于各种醛的氢膦酰化反应的高效催化剂。
Synthesis and Herbicidal Activity of Novel Dialkoxyphosphoryl Aryl Methyl 2-(4,6-Dimethoxypyrimidin-2-yloxy) Benzoate Derivatives
作者:Chuanfei Jin、Hongwu He
DOI:10.1080/10426507.2010.511512
日期:2011.7.1
series of dialkoxyphosphoryl aryl methyl 2-(4,6-dimethoxy-pyrimidin-2-yloxy) benzoate derivatives was designed and synthesized. All new compounds were identified by elemental analysis, infrared (IR), 1H-NMR, and mass spectrometry (MS). Their herbicidalactivity against a set of weed species was examined. Some of the compounds showed potential herbicidalactivity, which provided some indications for further
Rare-earth metal amido complexes supported by bridged bis(β-diketiminato) ligand as efficient catalysts for hydrophosphonylation of aldehydes and ketones
A series of rare-earth metal amides supported by a cyclohexyl-linked bis(β-diketiminato) ligand were synthesized, and their catalytic activities for hydrophosphonylation of aldehydes and ketones were developed. Reaction of [(Me3Si)2N]3RE(µ-Cl)Li(THF)3 with the cyclohexyl-linked bis(β-diketimine) H2L (1) (L = Cy[NC(Me)CHC(Me)NAr]2, Cy = cyclohexyl, Ar = 2, 6-i-Pr2C6H3) gave the rare-earth metal amides
合成了一系列由环己基连接的双(β-二酮亚胺基)配体负载的稀土金属酰胺,并开发了它们对醛和酮进行氢膦酰化的催化活性。[(Me 3 Si)2 N] 3 RE(µ-Cl)Li(THF)3与环己基连接的双(β-二酮亚胺)H 2 L(1)(L = Cy [NC(Me)CHC (Me)NAr] 2,Cy =环己基,Ar = 2,6 - i -Pr 2 C 6 H 3)得到稀土金属酰胺LREN(SiMe 3)2(RE = Nd(2),Sm(3),Dy(4),Er(5),Y(6))。所有复合物均通过元素,光谱和单晶X射线分析得到充分表征。配合物的催化性能研究表明,在稀土金属酰胺(0.1-1 mol%)的室温下,负载量非常低的情况下,这些配合物对醛和酮的氢膦酰化反应显示出高催化活性。短时间。