863678-29-9

Upstream product

• 637-87-6 1-Chloro-4-iodobenzene 
• 75867-39-9 4-trimethylsilylethynyl aniline 
• 16116-78-2 (4-bromophenyl)(trimethylsilyl)acetylene 
• 106-47-8 4-chloro-aniline 

Downstream Products

• 863678-27-7 N,N-di(4-chlorophenyl)-N-(4-ethynylphenyl)amine 
• 863678-28-8 N,N-di(4-chlorophenyl)-N-(4-(trimethylsilylethynyl)phenyl)amine 

Relevant academic research and scientific papers

Highly Chemoselective Iridium Photoredox and Nickel Catalysis for the Cross-Coupling of Primary Aryl Amines with Aryl Halides

A visible-light-promoted iridium photoredox and nickel dual-catalyzed cross-coupling procedure for the formation C?N bonds has been developed. With this method, various aryl amines were chemoselectively cross-coupled with electronically and sterically diverse aryl iodides and bromides to forge the corresponding C?N bonds, which are of high interest to the pharmaceutical industries. Aryl iodides were found to be a more efficient electrophilic coupling partner. The coupling reactions were carried out at room temperature without the rigorous exclusion of molecular oxygen, thus making this newly developed Ir-photoredox/Ni dual-catalyzed procedure very mild and operationally simple.

Photoinduced charge transfer processes along triarylamine redox cascades

In this paper, we describe the synthesis and photophysical properties of a series of acridine-triarylamine redox cascades. These cascades were designed in order to promote photoinduced hole transfer from an acridine fluorophore into an adjacent triarylamine. The excited dipolar state then injects a hole into the triarylamine redox cascade. Subsequently, the hole migrates along the redox gradient which was tuned by the substituents attached to the triarylamine redox centers. The rate of hole migration was determined by fluorescence lifetime measurements and is in the ns regime and depends strongly on the solvent polarity. The photophysical processes were also investigated by femtosecond broadband pump-probe spectroscopy. Our studies reveal different dynamic processes in the cascades depending on the solvent polarity, e.g., direct charge separation after photoexcitation vs a two step hole transfer mechanism.