A copper-catalyzed synthesis of benzimidazo[1,2-a]benzimidazoles by domino addition/doublecyclization of bis-(o-haloaryl)carbodiimides with primary amines was developed. A variety of the desired polycyclic benzimidazoles were efficiently and facilely assembled. Multibonds and polycyclic moieties were directly constructed in one pot. 2-Bromo-2′-iodo-diarylcarbodiimides gave good selectivity.
开发了一种铜催化的双-(邻卤代芳基)碳二亚胺与伯胺的多米诺加成/双环化反应,合成苯并咪唑[1,2- a ]苯并咪唑。各种所需的多环苯并咪唑都可以高效,轻松地组装。多键和多环部分直接在一个罐中构建。2-Bromo-2'-碘-二芳基碳二亚胺具有良好的选择性。
BENZIMIDAZOLO[1,2-A]BENZIMIDAZOLE CARRYING ARYL- OR HETEROARYLNITRIL GROUPS FOR ORGANIC LIGHT EMITTING DIODES
申请人:IDEMITSU KOSAN CO., LTD.
公开号:US20180086763A1
公开(公告)日:2018-03-29
Novel benzimidazolo[1,2-a]benzimidazoles carrying aryl- or heteroarylnitril groups, an electronic device, comprising said novel benzimidazolo[1,2-a]benzimidazoles carrying aryl- or het-eroarylnitril groups, which is preferably an electroluminescent device, a charge transport layer, a charge/exciton blocker layer, or an emitting layer comprising said novel benzimidazolo[1,2-a]benzimidazoles carrying aryl- or heteroarylnitril groups, an apparatus selected from the group consisting of stationary visual display units; mobile visual display units; illumination units; key-boards; items of clothing; furniture; wallpaper, comprising said organic electronic device, or said charge transport layer, said charge/exciton blocker layer, or said emitting layer.