885-94-9Relevant academic research and scientific papers
Addition Reaction of Immonium Benzotriazolates To Acetylenic Esters
Katritzky, Alan R.,Fali, Clara N.,Oniciu, Daniela C.
, p. 1069 - 1076 (1995)
1-Dialkylaminomethylbenzotriazoles react with ethyl propiolate and dimethyl acetylenedicarboxylate by addition of the benzotriazole anion followed by the immonium cation.The benzotriazolyl group in the products undergoes facile nucleophilic displacement.
Unveiling Potent Photooxidation Behavior of Catalytic Photoreductants
Targos, Karina,Williams, Oliver P.,Wickens, Zachary K.
, p. 4125 - 4132 (2021/04/07)
We describe a photocatalytic system that reveals latent photooxidant behavior from one of the most reducing conventional photoredox catalysts, N-phenylphenothiazine (PTH). This aerobic photochemical reaction engages difficult to oxidize feedstocks, such as benzene, in C(sp2)-N coupling reactions through direct oxidation. Mechanistic studies are consistent with activation of PTH via photooxidation and with Lewis acid cocatalysts scavenging inhibitors inextricably formed in this process.
Synthesis of pyrazole-carboxamides and pyrazole-carboxylic acids derivatives: Simple methods to access powerful building blocks
Dos Santos, Maurício Silva,Ferreira, Byanca Silva,Silva, Rafaela Corrêa,Souto, Bernardo Araújo
, p. 335 - 343 (2021/09/07)
Hybrid systems containing pyrazole moiety show a wide spectrum of biological activities. To access novel hybrids with pyrazole ring, in this work we synthesized twenty pyrazole-carboxylic acids and twenty pyrazole-carboxamides, using simple synthetic methods, to be used as building blocks in the development of new structures.
NOVEL COMPOUND AS MTOR INHIBITOR AND USE THEREOF
-
Paragraph 0063; 0096, (2021/03/04)
The present invention relates to a novel compound as an mTOR inhibitor and a use thereof and, more specifically, to a novel compound represented by formula 1 that exhibits mTOR inhibitory activity and a pharmaceutical composition comprising same as an act
Electrophotocatalysis with a Trisaminocyclopropenium Radical Dication
Huang, He,Strater, Zack M.,Rauch, Michael,Shee, James,Sisto, Thomas J.,Nuckolls, Colin,Lambert, Tristan H.
supporting information, p. 13318 - 13322 (2019/08/12)
Visible-light photocatalysis and electrocatalysis are two powerful strategies for the promotion of chemical reactions. Here, these two modalities are combined in an electrophotocatalytic oxidation platform. This chemistry employs a trisaminocyclopropenium (TAC) ion catalyst, which is electrochemically oxidized to form a cyclopropenium radical dication intermediate. The radical dication undergoes photoexcitation with visible light to produce an excited-state species with oxidizing power (3.33 V vs. SCE) sufficient to oxidize benzene and halogenated benzenes via single-electron transfer (SET), resulting in C?H/N?H coupling with azoles. A rationale for the strongly oxidizing behavior of the photoexcited species is provided, while the stability of the catalyst is rationalized by a particular conformation of the cis-2,6-dimethylpiperidine moieties.
L -(-) -Quebrachitol as a Ligand for Selective Copper(0)-Catalyzed N-Arylation of Nitrogen-Containing Heterocycles
Zhou, Qifan,Du, Fangyu,Chen, Yuanguang,Fu, Yang,Sun, Wenjiao,Wu, Ying,Chen, Guoliang
, p. 8160 - 8167 (2019/06/28)
l-(-)-Quebrachitol (QCT) has been found as a ligand of copper powder for selective N-arylation of nitrogen-containing heterocycles with aryl halides. Furthermore, another potential catalytic system (copper powder/QCT/t-BuOK) was successfully adapted to unactivated aryl chlorides.
Copper-catalyzed C–N cross-coupling of arylboronic acids with N-acylpyrazoles
Zhang, Jin,Jia, Run-Ping,Wang, Dong-Hui
supporting information, p. 3604 - 3607 (2016/07/21)
A copper-catalyzed C–N bond forming reaction of arylboronic acids and N-acylpyrazoles was developed. This procedure used N-acetyl protected pyrazoles as starting material instead of free pyrazoles (NH). The reaction worked under neutral conditions and did not require any base or ligand. The reaction showed good functional group tolerance.
Cu-promoted sydnone cycloadditions of alkynes: Scope and mechanism studies
Comas-Barcel?3, Jffllia,Foster, Robert S.,Fiser, B??la,Gomez-Bengoa, Enrique,Harrity, Joseph P. A.
supporting information, p. 3257 - 3263 (2015/03/05)
Cu salts have been found to promote the cycloaddition reaction of sydnones and terminal alkynes, providing significant reduction in reaction times. Specifically, the use of Cu(OTf)2 is found to provide 1,3-disubstituted pyrazoles, whereas simpl
nBu3P-catalyzed desulfonylative [3 + 2] cycloadditions of allylic carbonates with arylazosulfones to pyrazole derivatives
Zhang, Qi,Meng, Ling-Guo,Wang, Kuai,Wang, Lei
supporting information, p. 872 - 875 (2015/04/21)
Highly efficient nBu3P-catalyzed desulfonylative [3 + 2] cycloadditions of allylic carbonates with arylazosulfones were developed for the synthesis of pyrazole derivatives. The reactions proceed smoothly under mild conditions to gene
One-pot synthesis of 1,4-disubstituted pyrazoles from arylglycines via copper-catalyzed sydnone-alkyne cycloaddition reaction
Specklin, Simon,Decuypere, Elodie,Plougastel, Lucie,Aliani, Soifia,Taran, Frédéric
, p. 7772 - 7777 (2014/10/15)
A robust method for constructing 1,4-pyrazoles from arylglycines was developed using the copper-catalyzed sydnone-alkyne cycloaddition reaction. The procedure offers a straightforward and general route to the pyrazole heterocycle through a three-step one-pot procedure.
