N‐Heterocyclic Olefin‐Ligated Palladium(II) Complexes as Pre‐Catalysts for Buchwald–Hartwig Aminations
作者:Ian C. Watson、André Schumann、Haoyang Yu、Emma C. Davy、Robert McDonald、Michael J. Ferguson、Christian Hering‐Junghans、Eric Rivard
DOI:10.1002/chem.201901376
日期:2019.7.22
New N‐heterocyclic olefins (NHOs) are described with functionalization on the ligandheterocyclic backbone and terminal alkylidene positions. Various PdII–NHO complexes have been formed and their use as pre‐catalysts in Buchwald–Hartwig aminations was explored. The most active system for catalytic C−N bond formation between hindered arylamine and arylhalide substrates was accessed by combining a backbone
描述了在配体杂环主链和末端亚烷基位置有官能化的新型N-杂环烯烃(NHO)。已经形成了各种Pd II- NHO络合物,并探索了它们在布赫瓦尔德-哈特维希胺化中作为预催化剂的用途。受阻的芳基胺和芳基卤化物底物之间形成催化C-N键的活性最高的系统是通过在NaO t Bu为碱的情况下将主链甲基化的NHO与[Pd(肉桂基)Cl] 2结合而获得的。在这些活性系统中,证据表明催化作用是由胶态钯金属介导的,这突出了与常用的N杂环卡宾配体相比,NHO具有不同的配位能力。
Palladium-Catalyzed Amination of Aryl Sulfides with Anilines
A combination of a palladium–NHC catalyst and potassium hexamethyldisilazide enables the amination of aryl sulfides with anilines to afford a wide variety of diarylamines. The reaction conditions are versatile enough for the reaction of even bulky ortho‐substituted aryl sulfides. This amination can be applied to the modular synthesis of N‐aryl carbazoles from the corresponding ortho‐bromothioanisoles
Aniline derivatives such as those represented by the formula shown, for example, have good solubility with respect to organic solvents, and are able to provide an organic electroluminescent element having excellent luminance characteristics when a thin film containing said aniline derivatives is used as a charge transporting substance in a hole injection layer.
(In the formula, DPA represents a diphenylamino group.)
CHARGE TRANSPORT MATERIAL
申请人:NISSAN CHEMICAL INDUSTRIES, LTD.
公开号:US20170213986A1
公开(公告)日:2017-07-27
A charge transport material containing a charge transport substance that is composed of a compound represented by formula (1) and another charge transport substance that is composed of a charge transport compound having a molecular weight of 200-9,000 exhibits good solubility in an organic solvent. A charge transport varnish, from which a charge transport thin film having excellent charge transport properties, flatness and uniformity is formed with good reproducibility, is able to be prepared by dissolving the above-described charge transport material in an organic solvent.