报道了在氧化条件下使用(二乙酰氧基碘)苯和K 2 S 2 O 8的组合,从N-吡啶基吲哚空前合成稠合的喹唑啉酮的报道。该反应是无金属的,具有广泛的底物范围,操作简单且反应时间短,并且以中等至高产率提供了11 H-吡啶并[2,1 - b ]喹唑啉-11酮衍生物。据信它是通过原位生成的2-羟基-1-(吡啶-2-基)吲哚-3-酮作为关键反应中间体进行的,该中间体经历CC键裂解产生亲电C-3位点在N-吡啶基吲哚中。吡啶氮随后的亲核攻击导致其环化。
Binuclear and trinuclear metal complexes composed of two inter-linked tripodal hexadentate ligands for use in electroluminescent devices
申请人:Merck Patent GmbH
公开号:US10889604B2
公开(公告)日:2021-01-12
The present invention relates to bi- and trinuclear metal complexes and to electronic devices, in particular organic electroluminescent devices, containing these complexes.
The present invention relates to metal complexes and to electronic devices, especially organic electroluminescent devices, comprising these metal complexes, especially as emitters, and in particular monometallic metal complex containing a hexadentate tripodal ligand in which three bidentate sub-ligands coordinate to a metal and the three bidentate sub-ligands, which may be the same or different, are joined via a bridge.
Binuclear metal complexes for use as emitters in organic electroluminescent devices
申请人:Merck Patent GmbH
公开号:US11136343B2
公开(公告)日:2021-10-05
The present invention relates to binuclear metal complexes and electronic devices, in particular organic electroluminescent devices containing said metal complexes.
AbstractAn efficient copper‐catalyzed tandem aerobic oxidative annulation and carbon‐carbon bond cleavage reaction was developed from easily accessible arylacetamides, which provides a direct approach for the domino synthesis of a vast array of tricyclic or tetracyclic fused quinazolinone alkaloid structures. A plausible reaction mechanism is proposed involving an aerobic benzylic oxidation/cyclization/decarbonylation cascade.magnified image