Gold(I)-Catalyzed Asymmetric Induction of Planar Chirality by Intramolecular Nucleophilic Addition to Chromium-Complexed Alkynylarenes: Asymmetric Synthesis of Planar Chiral (1<i>H</i>-Isochromene and 1,2-Dihydroisoquinoline)chromium Complexes
Gold(I)-catalyzed asymmetric intramolecular cyclization of prochiral 1,3-dihydroxymethyl-2-alkynylbenzene or 1,3-bis(carbamate)-2-alkynylbenzene tricarbonylchromium complexes with axially chiral diphosphine ligand gave planar chiral tricarbonylchromium complexes of 1H-isochromene or 1,2-dihydroisoquinoline with high enantioselectivity. An enantiomeric excess of the planar chiral arene chromium complexes
Rationally Designed Fluorescence<sup>.</sup>OH Probe with High Sensitivity and Selectivity for Monitoring the Generation of<sup>.</sup>OH in Iron Autoxidation without Addition of H<sub>2</sub>O<sub>2</sub>
作者:Hongyu Li、Xiaohua Li、Wen Shi、Yanhui Xu、Huimin Ma
DOI:10.1002/anie.201808400
日期:2018.9.24
of 1 with .OH leads to a larger π‐conjugation formation and near‐infraredfluorescence off–on response. The capability of probe 1 has been demonstrated by imaging .OH generated in livingcells under iron autoxidation as well as various stimuli, which reveals that the basal level of .OH in RAW 264.7 cells is lower than that in HeLa cells. The superior analytical performance of probe 1 makes it useful
A method for producing a biaryl compound, comprising reacting an aromatic organic compound with at least one compound selected from the group consisting of aromatic organoboron compounds and boroxine compounds, in the presence of a zero-valent nickel catalyst, phosphine ligand and base.
A method for producing a biaryl compound, comprising reacting an aromatic organic compound with at least one compound selected from the group consisting of aromatic organoboron compounds and boroxine compounds, in the presence of a zero-valent nickel catalyst, phosphine ligand and base.