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A facile benzylic alkylation of indenes and other arenes was developed from readily available primary and secondary alcohols using our newly investigated CCC pincer IrIII catalyst (SNIr−H). Excellent regioselectivity and yield (89 %) of the C3‐alkylated indenes were obtained. Additionally, the challenging sp2C‐alkylation was readily accomplished. This method could be utilized for the synthesis of the analogs of a histamine H1 receptor antagonist and the functional material template molecule, indeno[2,1‐a]indene. A hemilabile IrIII‐dihydride intermediate was proposed based on control experiments and previous density functional theory (DFT) calculations for the borrowing hydrogen mechanism and is key to the success of this IrIII catalyst in the reduction of unactivated multi‐substituted olefin intermediates.

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A versatile silylation of heteroaryl C−H bonds is accomplished under the catalysis of a well-defined spirocyclic NHC Ir(III) complex (SNIr), generating a variety of heteroarylsilanes. A significant advantage of this...

mitochondria and lysosomes, thus regulating numerous cellular processes, most notably those involved in the maintenance of cellular homeostasis. [3][4][5][6][7][8][9][10][11] Moreover, the mounting evidence implicates the breakdown in mitochondria-lysosome interorganelle cross-talk as relevant in number of human pathologies, most notably neurodegenerative disease, such as Parkinson's disease. [3] Therefore, understanding MLC processes and the key molecules involved in mediating inter-organelle communication in normal cellular physiology as well as disease is of critical importance.Due to the limitation of Abel diffraction, the structure of subcellular organelles below 200 nm cannot be observed by a traditional fluorescence microscope. [12,13] Recently developed super-resolution imaging technology, such as structured illumination microscopy (SIM) [14][15][16] has been widely used for organelle interaction analysis to reveal the involvement of Ca 2+ in MLCs through capturing various time-lapse images. [17] Although this study captured Ca 2+ dynamics through the acquisition of time-lapse images, this required continuous laser irradiation, thus destroying the quantum yield of fluorescence. [12,18,19] This effect, also known as photobleaching, represents a major Rapid bioactive ion exchange is a form of communication that regulates a wide range of biological processes. Despite advances in super-resolution optical microscopy, visualizing ion exchange remains challenging due to the extremely fast nature of these events. Here, a "converting a dynamic event into a static image construction" (CDtSC) strategy is developed that uses the color transformation of a single dichromatic molecular probe to visualize bioactive ion inter-organelle exchange in live cells. As a proof of concept, a reactive sulfur species (RSS) is analyzed at the mitochondria-lysosome contact sites (MLCs). A non-toxic and sensitive probe based on coumarin-hemicyanine structure is designed that responds to RSS localized in both mitochondria and lysosomes while fluorescing different colors. Using this probe, RSS give-and-take at MLCs is visualized, thus providing the first evidence that RSS is involved in inter-organelle contacts and communication. Taken together, the CDtSC provides a strategy to visualize and analyze rapid inter-organelle ion exchange events in live cells at nanometer resolution.

Abstract：The 232 Th(n, γ) 233 Th neutron capture reaction cross sections were measured at average neutron energies of 14.1 MeV and 14.8 MeV using the activation method. The neutron flux was determined using the monitor reaction 27 Al(n,α) 24 Na.The induced gamma-ray activities were measured using a low background gamma ray spectrometer equipped with a high resolution HPGe detector. The experimentally determined cross sections were compared with the literatures data, evaluated data of ENDF/B-VII, JENDL-4.0, and CENDL-3.1. The Excitation functions of 232 Th(n,γ) reaction were also calculated theoretically using the TALYS 1.6 computer code.