亚磷酸二乙酯与[(Me 3 Si)2 N] 3 RE(μ-Cl)Li(THF)3(RE = Sc(1),Y(2), La(3),Yb(4)和Lu(5))与H 2 L n((S)-2,4-R 2 -6-[[[((2-羟基二苯基甲基)吡咯烷-1-基]甲基]苯酚)(R = t Bu(H 2 L 1); R = 1-枯基(H 2 L 2)和R = 1-adm(H 2 L 3))被披露。测试了不同的中心金属和配体对加成反应的影响,发现Sc配合物1和配体H 2 L 2的结合效果最好。使用相对较宽的不饱和酰胺范围,可获得优异的化学收率(高达99%)和良好至高的对映选择性(从73%到89%不等)。还讨论了当前系统中的活跃物种。
Synthesis and Structure−Activity Relationships of Substituted Cinnamic Acids and Amide Analogues: A New Class of Herbicides
作者:Shipra Vishnoi、Vikash Agrawal、Virendra K. Kasana
DOI:10.1021/jf8034385
日期:2009.4.22
In the present investigation, substituted cinnamicacids (3-hydroxy, 4-hydroxy, 2-nitro, 3-nitro, 4-nitro, 3-chloro, and 4-methoxy) and their amide analogues with four different types of substituted anilines have been synthesized. The synthesized compounds have been screened for their germination inhibition activity on radish (Raphanus sativus L. var. Japanese White) seeds at 50, 100, and 200 ppm concentrations
An efficient asymmetric hydrophosphonylation of unsaturated amides catalyzed by rare-earth metal amides [(Me<sub>3</sub>Si)<sub>2</sub>N]<sub>3</sub>RE(μ-Cl)Li(THF)<sub>3</sub> with phenoxy-functionalized chiral prolinols
作者:Zenghui Fei、Chao Zeng、Chengrong Lu、Bei Zhao、Yingming Yao
DOI:10.1039/c7ra00468k
日期:——
An asymmetric hydrophosphonylation reaction of diethyl phosphite with α,β-unsaturated amides catalyzed by [(Me3Si)2N]3RE(μ-Cl)Li(THF)3 (RE = Sc (1), Y (2), La (3), Yb (4) and Lu (5)) with H2Ln ((S)-2,4-R2-6-[[2-(hydroxydiphenylmethyl)pyrrolidin-1-yl]methyl]phenol) (R = tBu (H2L1); R = 1-cumyl (H2L2) and R = 1-adm (H2L3)) was disclosed. The effects of different central metals and proligands on the addition
亚磷酸二乙酯与[(Me 3 Si)2 N] 3 RE(μ-Cl)Li(THF)3(RE = Sc(1),Y(2), La(3),Yb(4)和Lu(5))与H 2 L n((S)-2,4-R 2 -6-[[[((2-羟基二苯基甲基)吡咯烷-1-基]甲基]苯酚)(R = t Bu(H 2 L 1); R = 1-枯基(H 2 L 2)和R = 1-adm(H 2 L 3))被披露。测试了不同的中心金属和配体对加成反应的影响,发现Sc配合物1和配体H 2 L 2的结合效果最好。使用相对较宽的不饱和酰胺范围,可获得优异的化学收率(高达99%)和良好至高的对映选择性(从73%到89%不等)。还讨论了当前系统中的活跃物种。