Organozinc-mediated direct cross-coupling under microwave irradiation
作者:Chun-Jing Li
DOI:10.1177/17475198211026479
日期:2021.9
direct cross-coupling reaction between (het)aryl pivalates/tosylates and di(het)arylzinc species in 2-methyltetrahydrofuran/N-methyl pyrrolidone (1:1), which occurs via C–O bond cleavage undermicrowaveirradiation. The reaction takes place smoothly in short reaction times without the addition of any catalyst or ligand. The reaction is suitable for a broad scope of substrates and exhibits good functional
Proton and carbon nuclear magnetic resonance study on some n- and o-acyl derivatives of monohydroxypyridines
作者:M.R. Del Giudice、G. Settimj、M. Delfini
DOI:10.1016/0040-4020(84)85087-5
日期:1984.1
Comparative study on the proton and carbon NMR spectra for a series of N- and O-acyl substituted monohydroxypyridines (C5H4NOR: R=-H, -CHO, -COCH3, -COC(CH3)3, -COCF3, -COC6H5, -SO2CH3, -SO2C6H4CH3 is reported. p]Characteristic 1H, 13 NMR and IR spectral features allow simple and unambiguous distinction between the isomeric N- and/or O-acyl-derivatives of 2-, 3- and 4-hydroxypyridines, so that both
一系列N和O-酰基取代的单羟基吡啶(C 5 H 4 NOR:R = -H,-CHO,-COCH 3,-COC(CH 3)3,-COCF的质子和碳NMR光谱的比较研究报道了3,-COC 6 H 5,-SO 2 CH 3,-SO 2 C 6 H 4 CH 3 [ p]特性1 H,13 NMR和IR光谱特征可对2-,3-和4-羟基吡啶的同分异构的N-和/或O-酰基衍生物进行简单而明确的区分,因此,由于互变异构,当互变异构发生平衡时,两种形式都可以清楚地鉴定出来。速度在NMR时间尺度上很慢
A Polystyrene-Cross-Linking Bisphosphine: Controlled Metal Monochelation and Ligand-Enabled First-Row Transition Metal Catalysis
bisphosphine monochelation to transition metals under conditions where homogeneousligands may form bischelated single metal complexes or multinuclear complexes. PS-DPPBz showed high ligand performance in first-row transition metal catalysis, enabling challenging molecular transformations that were not possible through the screening of existing homogeneousligands. In the Ni-catalyzed amination of aryl
Substituted heteroaryl compounds and methods of use
申请人:SUNSHINE LAKE PHARMA CO., LTD.
公开号:US10266521B2
公开(公告)日:2019-04-23
The present invention provides novel heteroaryl compounds, pharmaceutical acceptable salts and formulations thereof. They are useful in preventing, managing, treating or lessening the severity of a protein kinase-mediated disease. The invention also provides pharmaceutically acceptable compositions comprising such compounds and methods of using the compositions in the treatment of protein kinase-mediated disease.
Esters containing aromatic groups as solvents for organic electronic formulations
申请人:Merck Patent GmbH
公开号:US11171294B2
公开(公告)日:2021-11-09
The present invention relates to formulations for the preparation of organic electronic devices (OLEDs) which comprise (A) at least one specific ester solvent containing an aromatic group and (B) at least one organic functional material selected from organic conductors, organic semiconductors, organic fluorescent compounds, organic phosphorescent compounds, organic light-absorbent compounds, organic light-sensitive compounds, organic photosensitisation agents and other organic photoactive compounds, selected from organometallic complexes of transition metals, rare earth metals, lanthanides and actinides.