Synthèse de quelques N, N'-di-acyloxyalcoyl-pipérazines présentant des propriétés antispasmodiques
作者:Ph. Gold-Aubert、A. Locher
DOI:10.1002/hlca.19590420406
日期:——
Syntheses of esters of α-phenyl-α-alcoylacetic acids with N, N'-di-(2-hydroxy-ethyl)- and N, N'-di-(1-hydroxyprop-2-y1)- piperazine are described. These substances show papaverine-like antispasmodic properties.
PROCESS FOR PRODUCING ORGANOLITHIUM COMPOUND AND PROCESS FOR PRODUCING SUBSTITUTED AROMATIC COMPOUND
申请人:Inoue Hiroki
公开号:US20110224457A1
公开(公告)日:2011-09-15
A method for producing an organolithium compound includes the step of reacting an aromatic compound or a halogenated unsaturated aliphatic compound and a lithiating agent in the presence of a coordinating compound containing three or more elements having a coordinating ability in a molecule, at least one thereof being a nitrogen element, or a coordinating compound containing three or more oxygen elements having a coordinating ability in a molecule, at least one of the groups containing the oxygen elements having a coordinating ability being a tertiary alkoxy group, at a temperature of −40° C. to 40° C.
REACTIVE AMINE CATALYSTS FOR POLYURETHANE APPLICATIONS
申请人:Air Products and Chemicals, Inc.
公开号:US20160347901A1
公开(公告)日:2016-12-01
Tertiary amine catalysts having isocyanate reactive groups that are capable of forming thermally stable covalent bonds able to withstand temperatures up to 120° C. are disclosed. These catalyst can be used to produce polyurethane foam having the following desirable characteristics: a) very low chemical emissions over a wide range of environmental conditions and isocyanate indexes (e.g. indexes as low as 65 but higher than 60) while meeting all physical property requirements; b) sufficient hydrolytic stability to maintain the catalyst covalently bound to foam without leaching of tertiary amine catalyst when foam is exposed to water or aqueous solutions even at temperatures higher than ambient (temperature range 25° C. to 90° C.); and c) stable contact interface between the polyurethane polymer and other polymers (for example polycarbonate) with minimal migration of tertiary amine catalyst from polyurethane polymer to other polymers yielding no noticeable polymer deterioration at the point of contact even under conditions of heat and humidity.
Binuclear and mononuclear Cu(II) and Ni(II) complexes of tetra- and hexadentate ligands
作者:Murat Turkyilmaz
DOI:10.1007/s10973-017-6187-6
日期:2017.7
tetradentate ligands, 1,2-bis(2-hydroxyethylthio)ethane S2O2 (L 1) and N,N′-bis(2-hydoxypropyl)piperazine N2O2 (L 2), were prepared by organization of some mononuclear complexes of Cu(II) and Ni(II). A new binuclear Schiff base ligand with a 1,4-dipropoxybutane spacer provided by the reaction of salicylaldehyde and 1,4-bis(3-aminopropoxy)butane served as an octadentate, N2O4 (L 3) ligand, in designing
通过组织如下的结构制备了两个四齿配体:1,2-双(2-羟乙硫基)乙烷S 2 O 2(L 1)和N,N'-双(2-羟丙基)哌嗪N 2 O 2(L 2)。 Cu(II)和Ni(II)的一些单核络合物。通过设计水杨醛与1,4-双(3-氨基丙氧基)丁烷反应提供的具有1,4-二丙氧基丁烷间隔基的双核席夫碱配体作为八齿N 2 O 4(L 3)配体。与金属离子的双核络合物。所有配体均通过元素分析,FTIR,1 H和13C NMR和GC-MS。通过元素分析,FTIR,热方法,电子光谱,电导率和磁测量来表征复合物。金属离子以正方形平面几何形状与具有四个供体原子的配体配位。根据金属离子和施主原子的类型讨论了配合物的热稳定性。通过电子光谱和磁化率测量对复合物进行表征,以建立拟议的四坐标正方形平面几何形状。TG图表明配合物的高热稳定性。分解过程包括三个阶段:前两个阶段涉及水和氯阴离子的损失,最后一个阶段表明有机配
PLATINUM COMPOUNDS THAT INHIBIT CONSTITUTIVE STAT3 SIGNALING AND INDUCE CELL CYCLE ARREST AND APOPTOSIS OF MALIGNANT CELLS
申请人:H. LEE MOFFITT CANCER CENTER & RESEARCH INSTITUTE, INC.
公开号:US20140303134A1
公开(公告)日:2014-10-09
The subject invention concerns a compound and compositions having activity as an inhibitor of Stat3 protein and methods of using the compound and compositions. In one embodiment, a compound of the invention has the structure shown in formula I, formula II, or formula III. The subject invention also concerns methods of using the compounds and compositions of the invention.