This paper reports two new visible-light-promoted radical reactions of α-azido amides. By catalysis of [Ir(ppy)(dtbbpy)]PF with -PrNEt as the reducing agent, -aryl α-azido tertiary amides were first converted to the corresponding aminyl radicals through reduction of the azido group; the aminyl radicals then underwent N-to-N aryl migration to give α-anilinyl-functionalized amides. α-Azido secondary amides, on the other hand, reacted with the solvent ethanol and -PrNEt to afford the imidazolinone products.
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http://dx.doi.org/10.1021/acs.orglett.1c01120 | DOI Listing |
Angew Chem Int Ed Engl
January 2025
ShanghaiTech University, School of Physicl Science and Technology, 393 Middle Huaxia Road, Pudong, Shanghai, 201210, Shanghai, CHINA.
Traditionally, α-olefins have been regarded as non-homopolymerizable substrates in textbook examples. However, they have the ability to copolymerize with sulfur dioxide, leading to the creation of alternating copolymers. These commodity poly(olefin sulfone)s exhibite a wide array of applications.
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January 2025
School of Materials Science and Chemical Engineering, Institute of Drug Discovery Technology, Institute of Mass Spectrometry, Zhejiang Engineering Research Center of Advanced Mass Spectrometry and Clinical Application, Ningbo University, Ningbo, PR China.
C-C bond cleavage and recombination provide an efficient strategy for the modification and reconstruction of molecule structures. Herein, we present a method for achieving amidation of aryl C(sp)-H bond through the cleavage and recombination of C-C triple bond with the involvement of nitrous acid esters. This method marks the instance of precise and controlled stepwise cleavage of C-C triple bond, offering a fresh perspective for the cleavage of such bonds.
View Article and Find Full Text PDFRSC Chem Biol
January 2025
Department of Pharmaceutical Sciences, University of California Irvine California 92697 USA
The architecture of cells and the tissue they form within multicellular organisms are highly complex and dynamic. Cells optimize their function within tissue microenvironments by expressing specific subsets of RNAs. Advances in cell tagging methods enable spatial understanding of RNA expression when merged with transcriptomics.
View Article and Find Full Text PDFBurns Trauma
January 2025
Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Renmin South Road, Wuhou District, Chengdu 610041, China.
The circadian clock is an internal timekeeper system that regulates biological processes through a central circadian clock and peripheral clocks controlling various genes. Basic helix-loop-helix ARNT-like 1 (), also known as aryl hydrocarbon receptor nuclear translocator-like protein 1 (), is a key component of the circadian clock. The deletion of alone can abolish the circadian rhythms of the human body.
View Article and Find Full Text PDFOrg Lett
January 2025
School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China.
The translocation of an aryl group from selenium into carbon enabled by the cleavage of the C-Se bond is reported by using nitrogen atom-linked 1,7-diynes and diaryl diselenides as starting materials, leading to various selenophene derivatives in a regioselective manner. This method enables the construction of two C-Se bonds and two C-C bonds through sequential radical bicyclization and 1,2-aryl migration under metal-free conditions. Control experiments and mechanistic studies suggest that this reaction proceeds through the cleavage of the inert C(Ph)-Se bond, facilitating the aryl translocation process.
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