World-leading rare earth magnet recycling facility launches in UK
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Updates every hour. Last Updated: 23-Jun-2026 08:16 ET (23-Jun-2026 12:16 GMT/UTC)
A reserach team led by Guangfan Zheng and Qian Zhang at Northeast Normal University reported a visible light-mediated photoredox catalytic radical-polar cross-coupling strategy to achieve bifunctionalization of ipso- and para-positions in substituted aromatics. By utilizing the rapid coupling between sulfur dioxide and the dearomatized radical-type Meisenheimer intermediate, the Smiles rearrangement process was successfully delayed. Following radical ipso-cyclization, the inert C–N bond and the para-C–H bond were activated stepwise. This in-situ and para-bifunctionalization mode is complementary to the Catellani reaction, providing a novel strategy for precise multi-site modification of substituted aromatics. The article was published as an open access Research Article in CCS Chemistry, the flagship journal of the Chinese Chemical Society.
MIT chemists showed they can use nuclear magnetic resonance (NMR) to decipher the structure of the fuzzy coat that surrounds Tau proteins. The findings may aid efforts to develop drugs that interfere with Tau buildup in the brain.
Soils store more carbon than the atmosphere and vegetation combined, with soil microorganisms playing the main role. As a result, the global soil carbon cycle—by which carbon enters, moves through, and leaves soils worldwide—exerts a significant impact on climate change feedback. Now an important study led by researchers from the Institute of Earth Environment of the Chinese Academy of Sciences sheds new light on this cycle by overturning assumptions about the relationship between microbial respiration and carbon storage.