Buchwald-Hartwig Amination of Aryl Chlorides Catalyzed by Easily Accessible Benzimidazolyl Phosphine-Pd Complexes
作者:Chau So、Fuk Kwong、Kin Chung、Shun Wong、Chi Luk、Zhongyuan Zhou、Chak Lau
DOI:10.1055/s-0031-1290666
日期:2012.5
This study describes the efficacy of benzimidazolyl phosphine ligands, which are easily synthesized from inexpensive and commercially available o-phenylenediamine, 2-bormobenzoic acid, and chlorophosphines, in the Buchwald-Hartwig amination of aryl chlorides. Primary and secondary aromatic/aliphatic amines are effective substrates in this catalytic system. Functional groups such as keto and esters are also compatible. The catalyst loading can be reduced to 0.1 mol% Pd.
DYE, PHOTOELECTRIC CONVERSION ELEMENT USING THE SAME, PHOTOELECTROCHEMICAL CELL, AND METHOD OF PRODUCING DYE
申请人:Kobayashi Katsumi
公开号:US20110213144A1
公开(公告)日:2011-09-01
A dye, having a structure represented by formula (1A):
wherein A represents a group of atoms necessary for forming a ring together with the carbon-nitrogen bond; at least one of Y
1A
and Y
2A
represents an acidic group, in which when they each represent an acidic group, they may be the same as or different from each other, or when only one of them represents an acidic group, the other represents an electron-withdrawing group; D represents a group to give a dye; n represents an integer of 1 or greater; L represents a single bond or a divalent linking group; and Y
3A
represents an acidic group.
Nickel-Catalyzed <i>N</i>-Arylation of Diarylamines for Triarylamine Synthesis
作者:Kunjun Hu、Yunlong Gao、Jian Jin
DOI:10.1021/acs.organomet.2c00025
日期:2022.3.14
A practical nickel-catalyzed C–N cross-coupling reaction between diarylamines and aryl halides has been developed using commercially available NiCl2(dppf) as the catalyst. This robust method can be efficiently applied to a variety of diarylamines which are privileged motifs in materials science, including phenoxazines, phenothiazines, carbazoles, diphenylamines, 9-10-dihydroacridines, 10,11-dihydro-5H-dibenzo[b
已经使用市售的 NiCl 2 (dppf) 作为催化剂,开发了一种实用的镍催化二芳基胺和芳基卤化物之间的 C-N 交叉偶联反应。这种稳健的方法可以有效地应用于各种二芳基胺,它们是材料科学中的特权基序,包括吩恶嗪、吩噻嗪、咔唑、二苯胺、9-10-二氢吖啶、10,11-二氢-5 H-二苯并[ b , f ]氮杂类、5 H-二苯并[ b , f ]氮杂类和 9 H-三苯并[ b , d , f ]氮杂类。