Science

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• Kinetic and thermodynamic control of C(sp2)-H activation enables site-selective borylation AI翻译
  作者：Roque, Jose B.; Shimozono, Alex M.; Pabst, Tyler P.; Hierlmeier, Gabriele; Peterson, Paul O.; Chirik, Paul J.
  作者单位：Princeton University
  摘要：Catalysts that distinguish between electronically distinct carbon-hydrogen (C-H) bonds without relying on steric effects or directing groups are challenging to design. In this work, cobalt precatalysts supported by N-alkyl-imidazole-substituted pyridine dicarbene (ACNC) pincer ligands are described that enable undirected, remote borylation of fluoroaromatics and expansion of scope to include electron-rich arenes, pyridines, and tri- and difluoromethoxylated arenes, thereby addressing one of th...
• CLIMATE CHANGE Al Gore′s climate watchdog spots emission gaps At UN meeting, Climate Trace reveals missing greenhouse gases in nations′ inventories AI翻译
  作者：Voosen, Paul
• Biofortification of iron content by regulating a NAC transcription factor in maize AI翻译
  作者：Yan, Pengshuai; Du, Qingguo; Chen, Huan; Guo, Zifeng; Wang, Zhonghua; Tang, Jihua; Li, Wen-Xue
  作者单位：Chinese Academy of Agricultural Sciences; Institute of Crop Sciences, CAAS; Henan Agricultural University; Shennong Laboratory
  摘要：Iron (Fe) deficiency remains widespread among people in developing countries. To help solve this problem, breeders have been attempting to develop maize cultivars with high yields and high Fe concentrations in the kernels. We conducted a genome-wide association study and identified a gene, ZmNAC78 (NAM/ATAF/CUC DOMAIN TRANSCRIPTION FACTOR 78), that regulates Fe concentrations in maize kernels. We cultivated maize varieties with both high yield and high Fe concentrations in their kernels by usi...
• Harvard gift blamed in dismissal AI翻译
  作者：Brainard, Jeffrey
• Climate damage fund launched AI翻译
  作者：Brainard, Jeffrey
• Superpower?: The Wearable-Tech Revolution AI翻译
  作者：Lavine, Marc S.
• Increasing diversity on spacecraft mission teams reduces risk AI翻译
  作者：Mandt, Kathleen E.
• Wild Child AI翻译
  作者：Kmec, Lauren
• Ada Twist, Scientist: The Science of Baking AI翻译
  作者：Scanlon, Seth Thomas
• On-demand entanglement of molecules in a reconfigurable optical tweezer array AI翻译
  作者：Holland, Connor M.; Lu, Yukai; Cheuk, Lawrence W.
  作者单位：Princeton University; Princeton University
  摘要：Entanglement is crucial to many quantum applications, including quantum information processing, quantum simulation, and quantum-enhanced sensing. Because of their rich internal structure and interactions, molecules have been proposed as a promising platform for quantum science. Deterministic entanglement of individually controlled molecules has nevertheless been a long-standing experimental challenge. We demonstrate ondemand entanglement of individually prepared molecules. Using the electric d...