A Thiourea‐Oxazoline Library with Axial Chirality: Ligand Synthesis and Studies of the Palladium‐Catalyzed Enantioselective Bis(methoxycarbonylation) of Terminal Olefins
作者:Ying‐Xiang Gao、Le Chang、Hang Shi、Bo Liang、Kittiya Wongkhan、Duangduan Chaiyaveij、Andrei S. Batsanov、Todd B. Marder、Chuang‐Chuang Li、Zhen Yang、Yong Huang
DOI:10.1002/adsc.201000070
日期:2010.10.9
We report herein the synthesis of novel chiral S,N-heterobidentate thiourea-oxazoline ligands and their application to palladium-catalyzed enantioselective bis(methoxycarbonylation)s of terminalolefins under mild conditions. Copper salts were found to play multiple roles in this reaction. Substituted 2-phenylsuccinates were obtained in >90% yield and up to 84% ee under optimized conditions.
[EN] BENZIMIDAZOLO[1,2-A]BENZIMIDAZOLE DERIVATIVES FOR ORGANIC LIGHT EMITTING DIODES<br/>[FR] DÉRIVÉS BENZIMIDAZOLO[1,2-A]BENZIMIDAZOLE POUR DES DIODES ÉLECTROLUMINESCENTES ORGANIQUES
申请人:IDEMITSU KOSAN CO
公开号:WO2017093958A1
公开(公告)日:2017-06-08
Compounds of formula (I) and their use in electronic devices, especially electroluminescent devices: (I) wherein at least two of the substituents R1 and R2, R2 and R3, R3 and R4, R5 and R6, R6 and R7, or R7 and R8 form together one of the following ring systems (IIa), (IIb) (IIc). When used as charge transport material, charge blocker material and/or host material in electroluminescent devices, the compounds of formula (I) may provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices and reduced driving voltage of electroluminescent devices.
Heteroleptic compounds containing phenylpyridine and phenylbenzimidazole are provided. The compounds may be used in organic light emitting devices, particularly as emissive dopants in the emissive layer of such devices.
Heteroleptic compounds containing phenylpyridine and phenylbenzimidazole are provided. The compounds may be used in organic light emitting devices, particularly as emissive dopants in the emissive layer of such devices.
Heteroleptic compounds containing phenylpyridine and phenylbenzimidazole are provided. The compounds may be used in organic light emitting devices, particularly as emissive dopants in the emissive layer of such devices.