Recommanded Product: 2,4,6-Tris(diphenylamino)-3,5-difluorobenzonitrileOn November 17, 2021 ,《Metal-Free Hydrosilylation Polymerization by Merging Photoredox and Hydrogen Atom Transfer Catalysis》 appeared in Journal of the American Chemical Society. The author of the article were Huang, Zhujun; Chen, Zhe; Jiang, Yuan; Li, Ning; Yang, Shicheng; Wang, Guowei; Pan, Xiangcheng. The article conveys some information:
Organosilicon compounds and polymers have found wide applications as synthetic building blocks and functional materials. Hydrosilylation is a common strategy toward the synthesis of organosilicon compounds and polymers. Although transition-metal-catalyzed hydrosilylation has achieved great advances, the metal-free hydrosilylation polymerization of dienes and bis(silane)s, especially the one suitable for both electron-rich and electron-deficient dienes, is largely lacking. Herein, the authors report a visible-light-driven metal-free hydrosilylation polymerization of both electron-rich and electron-deficient dienes with bis(silane)s by using the organic photocatalyst and hydrogen atom transfer (HAT) catalyst. The authors achieved the well-controlled step-growth hydrosilylation polymerizations of the electron-rich diene and bis(silane) monomer due to the selective activation of Si-H bonds by the organic photocatalyst (4CzIPN) and the thiol polarity reversal reagent (HAT 1). For the electron-deficient dienes, hydrosilylation polymerization and self-polymerization occurred simultaneously in the presence of 4CzIPN and aceclidine (HAT 2), providing the opportunity to produce linear, hyperbranched, and network polymers by rationally tuning the concentration of electron-deficient dienes and the ratio of bis(silane)s and dienes to alter the proportion of the two polymerizations A wide scope of bis(silane)s and dienes furnished polycarbosilanes with high mol. weight, excellent thermal stability, and tunable architectures. The experimental part of the paper was very detailed, including the reaction process of 2,4,6-Tris(diphenylamino)-3,5-difluorobenzonitrile(cas: 1403850-00-9Recommanded Product: 2,4,6-Tris(diphenylamino)-3,5-difluorobenzonitrile)
2,4,6-Tris(diphenylamino)-3,5-difluorobenzonitrile(cas: 1403850-00-9) is cyanoarene-based donor-acceptor photocatalyst developed by the Zeitler group. While this catalyst has a balanced redox profile, allowing for its use in a variety of transformations, it stands out as the most reducing catalyst of the family.Recommanded Product: 2,4,6-Tris(diphenylamino)-3,5-difluorobenzonitrile
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts