我们通过使用报告与芳基卤硫醇的一般铜-催化的交叉偶联ñ -芳基- N' -烷基草酸二酰胺(L3)或ñ,N' -二烷基二酰胺草酸(L5)作为配体。芳基和烷基硫醇都可以与未活化的芳基溴化物和氯化物偶合,以高收率得到所需的产物。此外,该系统具有广泛的底物范围和对官能团的良好耐受性。重要的是,草酸二酰胺是稳定的,并且可以容易地由市售和廉价的起始原料制备。
A novel ZrO2–SO42− supported palladium catalyst for syntheses of disubstituted ureas from amines by oxidative carbonylation
作者:Feng Shi、Youquan Deng、Tianlong SiMa、Hongzhou Yang
DOI:10.1016/s0040-4039(01)00124-1
日期:2001.3
The syntheses of disubstituted ureas by carbonylation of a series of amines in the presence of a sulfate modified zirconia supported palladium catalyst was investigated at an initial total pressure of 4.0 MPa and 135°C. High conversions and yields were achieved for the synthesis of symmetric dialkylureas. This supported catalyst could also be easily separated and recovered after reaction.
Strategies toward the Enhanced Permeability and Retention Effect by Increasing the Molecular Weight of Arene Ruthenium Metallaassemblies
作者:Vidya Mannancherril、Bruno Therrien
DOI:10.1021/acs.inorgchem.7b02668
日期:2018.4.2
The enhancedpermeability and retention (EPR) effect is an attractive avenue to target tumors: The size of the drug is the key to accumulating predominantly in tumors. Therefore, to increase the molecular weight of arene ruthenium metallaassemblies, several strategies can be adopted, and we present here our first step in the design of larger and heavier discrete arene ruthenium metallaassemblies to
Tetraketopiperazine unit-containing compound as an active material in batteries
申请人:IM&T Research, Inc.
公开号:US20030148188A1
公开(公告)日:2003-08-07
Compounds containing at least one tetraketopiperazine-1,4-diyl unit are disclosed as active materials in the positive electrodes of batteries. Novel methods for preparing the tetraketopiperazine unit-containing compounds include: (i) reacting an oxalyl halide and an oxamide, and adding water or an aqueous alkali solution to the reaction mixture, (ii) reacting an oxalyl halide and a silylamine, (iii) reacting an oximidyl halide and an amine, (iv) reacting an oxalyl halide and a silylamine, and reacting with an amine, (v) reacting an oxalyl halide and a dioxamide, (vi) reacting an oximidyl halide and a diamine, and (vii) reacting an oxalyl halide and a silylamine, and reacting with a diamine. A novel method for preparing an oximidyl halide is also disclosed.