A method for producing a biaryl compound, comprising reacting an aromatic organic compound with at least one compound selected from the group consisting of aromatic organoboron compounds and boroxine compounds, in the presence of a zero-valent nickel catalyst, phosphine ligand and base.
A method for producing a biaryl compound, comprising reacting an aromatic organic compound with at least one compound selected from the group consisting of aromatic organoboron compounds and boroxine compounds, in the presence of a zero-valent nickel catalyst, phosphine ligand and base.
Polyimide resin, polyimide solution, film, and method for producing same
申请人:KANEKA CORPORATION
公开号:US10745519B2
公开(公告)日:2020-08-18
A polyimide resin of the present invention contains at least one kind of an alicyclic acid dianhydride as an acid dianhydride component and contains at least one kind of a sulfonyl group-containing diamine as a diamine component. A film containing the polyimide resin of the present invention preferably has a yellowness of 3.0 or less, a tensile elastic modulus of 3.5 GPa or more, a pencil hardness of 4H or more, and a light transmittance of 60% or more at a wavelength of 400 nm. The polyimide resin of the present invention and the film of the present invention preferably have a glass transition temperature of 300° C. or higher.
A guest moleculea bis-N-tetraethyleneglycol-substituted 3,3'-difluorobenzidine derivativehas been synthesized, and its complexation with the host, cyclobis(paraquat-p-phenylene), has been investigated. This host-guest complex was then employed in the template-directed synthesis of a blue-colored [2]rotaxane. The color of this [2]rotaxane arises from the charge-transfer absorption band between the HOMO of the guest and the LUMO of the host. This host-guest complex, and the derived [2]rotaxane, completes the donor-acceptor-based RGB (red/green/blue) color complex set.
RAT TOXICOLOGICALLY RELEVANT GENES AND USES THEREOF