Selective Suzuki-Miyaura Monocouplings with Symmetrical Dibromoarenes and Aryl Ditriflates for the One-Pot Synthesis of Unsymmetrical Triaryls
作者:Corinne Minard、Carole Palacio、Kevin Cariou、Robert H. Dodd
DOI:10.1002/ejoc.201400090
日期:2014.5
parameters that would permit selectiveSuzuki–Miyauramonocouplings of symmetrical dihaloarenes were studied. High selectivity and efficiency can be obtained for a broad range of substrates by using operationally simple conditions and widely available reagents. The 38 different examples described provide a valuable toolbox for the rapid access to unsymmetricaltriaryls, as illustrated by the preparation
Nickel‐Catalyzed Reductive C(sp
<sup>2</sup>
)−Si Coupling of Chlorohydrosilanes via Si−Cl Cleavage
作者:Zhen‐Zhen Zhao、Xiaobo Pang、Xiao‐Xue Wei、Xue‐Yuan Liu、Xing‐Zhong Shu
DOI:10.1002/anie.202200215
日期:2022.5.16
C−Si bond-forming reaction between R−X and Cl−Si(H)R2 was achieved using reductive nickel catalysis. This method offers access to structurally diverse aryl- and alkenylhydrosilanes from phenol and ketonederivatives. The reaction can be conducted on gram scale and allows for incorporating a hydrosilane moiety into biologically active molecules.
Nickel‐Catalyzed Reductive C−Ge Coupling of Aryl/Alkenyl Electrophiles with Chlorogermanes
作者:Pei‐Feng Su、Ke Wang、Xuejing Peng、Xiaobo Pang、Peng Guo、Xing‐Zhong Shu
DOI:10.1002/anie.202112876
日期:2021.12.13
A new C−Ge bond-forming framework was established, which bridges a gap between a recently developed mild coupling technique and organogermane chemistry. The method provides a mild approach for the synthesis of both aryl and alkenyl germanes, with improved molecular diversity and structural complexity, using readily available carbon electrophiles and chlorogermanes as starting materials.
Diyne-containing (co) polymer, processes for producing the same, and cured film
申请人:JSR Corporation
公开号:EP1099719A1
公开(公告)日:2001-05-16
A diyne-containing (co)polymer which is soluble in organic solvents, has excellent processability, and gives a cured coating film excellent in heat resistance, solvent resistance, low-dielectric characteristics, and mechanical strength; processes for producing the same; and a cured film.
The diyne-containing (co)polymer contains at least 10 mol% repeating units represented by the following formula (1) and has a weight-average molecular weight of from 500 to 1,000,000:
wherein Y represents a specific bivalent organic group; Ar represents a bivalent organic group; and n represents 0 or 1.