SUBSTITUTED 2-HETEROARYLOXYPYRIDINES AND SALTS THEREOF AND THEIR USE AS HERBICIDAL AGENTS
申请人:Bayer Aktiengesellschaft
公开号:US20210276974A1
公开(公告)日:2021-09-09
Substituted 2-heteroaryloxypyridines and salts thereof and use thereof as herbicidal active substances Substituted 2-heteroaryloxypyridines of the general formula (I) are described,
and their use as herbicides, in particular for controlling broad-leaved weeds and/or weed grasses in crops of useful plants and/or as plant growth regulators for influencing the growth of crops of useful plants. The present invention further relates to herbicidal and/or plant growth-regulating compositions comprising one or more compounds of the general formula (I).
platinum-catalyzed borylation of aromatic C–H bonds. N-Heterocyclic carbene-ligated platinum catalysts are found to be efficient catalysts for the borylation of aromatic C(sp2)–H bonds when bis(pinacolato)diboron is used as the boron source. The most remarkable feature of these Pt catalysts is their lack of sensitivity towards the degree of steric hindrance around the C–H bonds undergoing the borylation reaction
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
C–H Functionalization at Sterically Congested Positions by the Platinum-Catalyzed Borylation of Arenes
作者:Takayuki Furukawa、Mamoru Tobisu、Naoto Chatani
DOI:10.1021/jacs.5b07677
日期:2015.9.30
Despite significant progress in the area of C-H bond functionalization of arenes, no general method has been reported for the functionalization of C-H bonds at the sterically encumbered positions of simple arenes, such as mesitylene. Herein, we report the development of the first platinum-based catalyst for C-H borylation of arenes and heteroarenes. Notably, this method exhibited high tolerance toward steric hindrance and provided rapid access to a series of 2,6-disubstituted phenylboronic esters, valuable building blocks for further elaborations.