580-35-8Relevant articles and documents
Carbon-Nitrogen Bond Cleavage in ?-Radicals derived by Reduction of N-Benzyl- and N-Allyl-pyridinium Salts
Grimshaw, James,Moore, Shirley,Thompson, Norris,Trocha-Grimshaw, Jadwiga
, p. 783 - 784 (1983)
Certain 1-alkyl-2,4,6-trisubstituted pyridinium salts form ?-radicals by electrochemical reduction which are stable in dimethylformamide on the time scale of cyclic voltammetry, whereas the corresponding 1-benzyl and 1-allyl compounds undergo carbon-nitrogen bond cleavage at measured rates which are dependent on the size of the 2,6-substituents.
I2-Promoted Condensation/Cyclization of Aryl Methyl Ketones with Anilines for Facile Synthesis of 1,2,4-Triarylpyrroles
Hui, Xu,Wang, Fang-Jian,Ming, Xin,Zhang, Ze
, p. 925 - 929 (2016)
A novel iodine-mediated cascade condensation-cyclization of aryl methyl ketones with anilines has been successfully developed. According to this strategy, a variety of 1,2,4-triarylpyrroles were straightforwardly synthesized in moderate to good yields from very simple and readily available starting materials. A tentative reaction mechanism is presented. A novel iodine-mediated cascade condensation/cyclization of aryl methyl ketones with anilines has been successfully developed. According to this straightforward strategy, a variety of 1,2,4-triarylpyrroles were synthesized in moderate to good yields from very simple and readily available starting materials.
Iron-Catalyzed Synthesis of Pyridines from α,β-Unsaturated Ketoxime Acetates and N -Acetyl Enamides
Xu, Gaochen,Yan, Huan,Zhang, Sai,Wu, Qinghuan,Duan, Jindian,Guo, Kai
supporting information, p. 283 - 287 (2021/12/03)
A new method of FeCl2-catalyzed [4+2] annulation of α,β-unsaturated ketoxime acetates with N-acetyl enamides in batch and flow is reported. The current strategy features low-cost catalytic system, use of electron-rich olefins, operational simplicity, and broad substrate scope, thus providing a facile and efficient access to substituted pyridines in moderate to good yields.
Convenient one-pot synthesis of 1,2,4-oxadiazoles and 2,4,6-triarylpyridines using graphene oxide (GO) as a metal-free catalyst: Importance of dual catalytic activity
Basak, Puja,Dey, Sourav,Ghosh, Pranab
, p. 32106 - 32118 (2021/12/02)
A convenient and efficient process for the synthesis of 3,5-disubstituted 1,2,4-oxadiazoles and 2,4,6-triarylpyridines has been described using an inexpensive, environmentally benign, metal-free heterogeneous carbocatalyst, graphene oxide (GO). GO plays a dual role of an oxidizing agent and solid acid catalyst for synthesizing 1,2,4-oxadiazoles and triarylpyridines. This dual catalytic activity of GO is due to the presence of oxygenated functional groups which are distributed on the nanosheets of graphene oxide. A broad scope of substrate applicability and good sustainability is offered in this developed protocol. The results of a few control experiments reveal a plausible mechanism and the role of GO as a catalyst was confirmed by FTIR, XRD, SEM, and HR-TEM analysis.