Preparation of 2-Magnesiated 1,3,5-Triazines via an Iodine−Magnesium Exchange
摘要:
Functionalized iodo- and diiodo-1,3,5-triazine derivatives readily undergo an I/Mg exchange with BuMgCl, sBuMgCl, or OctMgBr at low temperatures. furnishing 2-magnesiated and 2-zincated 1,3,5-triazines (after transmetalation with ZnCl2). This method also offers a convenient access to dimagnesiated triazines. Furthermore, it allows the preparation of functionalized 1,3,5-triazinyl dimers and trimers, interesting for their optoelectronic properties.
[EN] COMPOUNDS HAVING ELECTROLUMINESCENT OR ELECTRON TRANSPORT PROPERTIES<br/>[FR] COMPOSÉS PRÉSENTANT DES PROPRIÉTÉS ÉLECTROLUMINESCENTES OU DE TRANSPORT DES ÉLECTRONS
申请人:MERCK PATENT GMBH
公开号:WO2009112854A1
公开(公告)日:2009-09-17
A compound of the formula R1 (CR3 =CR4 ) nAr(CR4 =CR3 ) nR2 wherein: n is 0 or 1; Ar represents aryl or heteroaryl having 1-5 aromatic rings which may be chain or fused or a combination of chain and fused, which may be substituted withalkoxy, fluoro, fluoroalkyl or cyano and which in the case of a 5-memnered ring nitrogen heteroatom may be N-substituted with aryl or substituted aryl optionally further substituted with alkoxy, fluoro, fluoroalkyl or cyano; R1 and R2 independently represent aryl or nitrogen, oxygen or sulphur-containing heteroaryl having two to four fused aromatic rings one of which may be 5-membered and optionally substituted by aryl or heteroaryl having 1-5 chain or fused aromatic rings which may be further substituted withalkoxy, fluoro, fluoroalkyl or cyano; and R3 and R4 independently represent hydrogen, methyl, ethyl or benzyl. Alsoprovided is a method of making a compound having electroluminescent and/or electroconductive properties, which comprises condensing an aromatic dialdehyde with a methyl-substituted heteroaryl compound having two to four fused rings which maybe unsubstituted ormay be further substituted by aryl or heteroaryl having from one to fouraromatic rings, said aryl or heteroaryl substituent or substituents optionally being substituted with one or more fluoro, fluoroalkyl orcyano substituents.The condensation may be carried out in acetic anhydride under reflux. The compounds may be incorporatede.g. as an electron transport layer into an optical light emitting diode,where embodiments can provide high electron mobility, low turn-on voltage and good lifetime,or into an electrostatic imaging member. Acompositionis provided comprising a compound as above and a second host or electron transport material and/or at leastone dopant.
An OLED device comprises a cathode, an anode, and has therebetween a light emitting layer comprising a phosphorescent emitter represented by Formula (I):
L
n
M (I)
wherein each L is a cyclometallated ligand with at least one containing a coumarin group, M is Ir or Pt, and n is 3 when M is Ir and 2 when M is Pt. The invention also comprised the compound of formula (I).
[EN] COMPOUNDS HAVING ELECTRON TRANSPORT PROPERTIES, THEIR PREPARATION AND USE<br/>[FR] COMPOSÉS PRÉSENTANT DES PROPRIÉTÉS DE TRANSPORT D'ÉLECTRONS, LEUR PRÉPARATION ET LEUR UTILISATION
申请人:MERCK PATENT GMBH
公开号:WO2010020352A1
公开(公告)日:2010-02-25
The invention provides compounds having utility inter alia as electron transport materials in optical light emitting diodes (OLEDs) and of the formula (I), (Il) or (III). Embodiments of the compounds when incorporated as electron transport layers in OLEDs exhibit a greater current density for a given voltage than corresponding devices where the electron transport material is aluminium quinolate.
The present invention includes organic compounds with two substituted triazine, pyridine, pyrimidine or pyrazine rings attached to an aromatic or heteroaromatic ring system. The compounds are expected to improve OLED performance.
OLED DEVICE EMPLOYING ALKALI METAL CLUSTER COMPOUNDS
申请人:Begley William J.
公开号:US20090142618A1
公开(公告)日:2009-06-04
The invention provides an OLED device containing certain alkali metal cluster compounds with mixed ligands, such compounds, and methods of making them. In particular, the cluster compound is a neutrally charged mixed cluster compound comprising first and second subunits with the first subunit comprising an alkali metal salt of a nitrogen containing a heterocyclic ligand bearing a anionic hydroxy group and the second subunit consisting of an organic alkali metal salt different than the first subunit.