An efficient and one-pot synthesis of 2,4,5-trisubstituted and 1,2,4,5-tetrasubstituted imidazoles catalyzed by InCl3·3H2O
作者:Saikat Das Sharma、Parasa Hazarika、Dilip Konwar
DOI:10.1016/j.tetlet.2008.02.053
日期:2008.3
InCl3·3H2O was found to be a mild and effective catalyst for the efficient, one-pot, three component synthesis of 2,4,5-trisubstituted imidazoles at room temperature. Moreover, the utility of this protocol was further explored conveniently for the one-pot, four component synthesis of 1,2,4,5-tetrasubstitutedimidazoles in high yields.
Intermolecular interactions that determine the regioselectivity in 1,3-dipolar cycloadditions ofN-methyl-1,3-oxazolium-5-olates withN-(phenylmethylene)benzenesulphonamide
作者:L. Bonati、R. Ferraccioli、G. Moro
DOI:10.1002/poc.610080703
日期:1995.7
1,3-Dipolar cycloadditions of N-(phenylmethylene)benzenesulphonamide with mesionic N-methyl-1,3-oxazolium-5-olates give 2,5-disubstituted imidazole derivatives with high regioselectivity. The intermolecular interactions underlying this regioselectivity were investigated. The conformational and electronic properties of the reagents were characterized separately. The approach in the early stages of the
VERNETZTE HOCHSTABILE ANIONENAUSTAUSCHERBLENDMEMBRANEN MIT POLYETHYLENGLYCOLEN ALS HYDROPHILER MEMBRANPHASE
申请人:Between Lizenz GmbH
公开号:EP3478750A1
公开(公告)日:2019-05-08
ORGANIC ELECTROLUMINESCENCE ELEMENT, LIGHTING DEVICE AND DISPLAY DEVICE
申请人:Katakura Rie
公开号:US20100045171A1
公开(公告)日:2010-02-25
Disclosed is an organic electroluminescent device having high external quantum efficiency and long emission life. Also disclosed are an illuminating device and a display, each comprising such an organic electroluminescent device. The organic electroluminescent device is characterized by comprising at least an anode and a cathode on a supporting substrate, while having at least one light-emitting layer between the anode and the cathode. The organic electroluminescent device is also characterized by containing a polymer which at least partially contains a compound A having a partial structure represented by the general formula (a) below and a reactive group, and is obtained by polymerizing the compound A through the reactive group. (In the formula, Ar1 and Ar2 respectively represent an aromatic ring.)
ORGANIC ELECTROLUMINESCENCE ELEMENT, NEW COMPOUND FOR THE SAME, DISPLAY DEVICE AND LIGHTING DEVICE USING THE SAME
申请人:KATAKURA Rie
公开号:US20110006670A1
公开(公告)日:2011-01-13
Disclosed is an organic electroluminescence element comprising an anode, a cathode and a plurality of organic compound layers between the anode and the cathode, provided that one of the organic compound layers is a light emitting layer containing a phosphorescence emitting compound,
wherein at least one of the organic compound layers contains a compound represented by Formula (1),
wherein, X represents O or S; Y
1
to Y
3
each represents a hydrogen atom, a substituent or a group represented by Formula (A) disclosed in the specification, provided that at least two of Y
1
to Y
3
are groups represented by Formula (A), not all of Y
1
to Y
3
are the same group, and at least one of the groups represented by Formula (A) has Ar of a carbazolyl group, or an azacarbazolyl group containing 2 to 5 nitrogen atoms.