Copper-Catalyzed<i>N</i>-Arylation of Hindered Substrates Under Mild Conditions
作者:Michael T. Wentzel、J. Brian Hewgley、Rajesh M. Kamble、Philip D. Wall、Marisa C. Kozlowski
DOI:10.1002/adsc.200800730
日期:2009.4
Abstractmagnified imageA mild, efficient method utilizing a copper‐diamine catalyst at room temperature is reported for the coupling of hindered imidazoles with unsubstituted, ortho‐substituted, and bis‐ortho‐substituted boronic acids in good to excellent yields. Aryl halides do not reaction under these conditions permitting sequential N‐arylation reactions.
IMIDAZOLE COMPOUND PRODUCTION METHOD, IMIDAZOLE COMPOUND, IMIDAZOLE-BASED COMPOUND, ORGANIC METAL COMPLEX, MATERIAL FOR ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC ELECTROLUMINESCENT ELEMENT, DISPLAY DEVICE, AND LIGHTING DEVICE
申请人:Numata Masaki
公开号:US20130270541A1
公开(公告)日:2013-10-17
A manufacturing method of an imidazole compound represented by a formula (1) below includes reacting 1-arylimidazole with a halogen-atom substituted compound. For performing this reaction, in a reaction system, a mole number N
f(2)
[mol] of the halogen-atom substituted compound and a total volume V
sol
[liter] of an ether solvent having at most 5 carbon atoms satisfy a relationship of V
sol
/N
f(2)
≦3.
In the formula (1): R
1
and R
4
represent a substituent and the like; Z
1
represents a group of atoms necessary for forming a hydrocarbon cyclic group and the like; R
2
and R
3
represent a bond, a hydrogen atom or an aromatic hydrocarbon group; Z
2
represents a group of atoms necessary for forming a five-membered hydrocarbon ring and the like together with C—C; and m represents an integer of 1 to 5.
Synthesis and Physical Properties of Tunable Aryl Alkyl Ionic Liquids (TAAILs) Comprising Imidazolium Cations Blocked with Methyl‐, Propyl‐ and Phenyl‐Groups at the C2 Position
作者:Harry Biller、Thomas Strassner
DOI:10.1002/chem.202202795
日期:2023.2
Blocking the C2 position of imidazolium-based tunablearylalkylionicliquids (TAAILs) with methyl, propyl and phenyl groups has a strong influence on their physicochemical properties like viscosity and conductivity. Especially the electrochemical window can be enlarged. Electron-donating and -withdrawing substituents on the aryl ring could further change the electron density which has also been analyzed