The efficient and gentle ruthenium-catalyzed meta-selective CAr–H nitration of azole ring substituted arenes has been developed.
我们开发了一种高效且温和的钌催化的对取代芳烃的唑环进行间位-选择性的CAr–H硝化的方法。
Herbicidal sulfonamides
申请人:E. I. Du Pont de Nemours and Company
公开号:US04514213A1
公开(公告)日:1985-04-30
Novel benzenesulfonylurea compounds containing phenyl or phenoxy substituents such as 2-[[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]aminosulfonyl]-4-phenylbenz oic acid, methyl ester, and 2-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)aminocarbonyl]aminosulfonyl]-4- phenylbenzoic acid, methyl ester, herbicidal compositions containing these compounds, and their method of use as general or selective pre-emergent or post-emergent herbicides.
Secondary Phosphine Oxide Preligands for Palladium-Catalyzed C-H (Hetero)Arylations: Efficient Access to Pybox Ligands
作者:Debasish Ghorai、Valentin Müller、Helena Keil、Dietmar Stalke、Giuseppe Zanoni、Boryslav A. Tkachenko、Peter R. Schreiner、Lutz Ackermann
DOI:10.1002/adsc.201700663
日期:2017.9.18
C–H arylations of oxazolines were accomplished with a well‐defined palladium catalyst derived from a secondary bisdiamantyl phosphine oxide. The single‐component secondary phosphine oxide (SPO)‐palladium complex enabled C–H activations with aryl bromides and challenging aryl chlorides in the absence of directing groups, setting the stage for the step‐economical synthesis of pybox ligands under racemization‐free
Aerobic C(sp<sup>2</sup>)–H Hydroxylations of 2-Aryloxazolines: Fast Access to Excited-State Intramolecular Proton Transfer (ESIPT)-Based Luminophores
作者:Dominik Göbel、Nils Clamor、Enno Lork、Boris J. Nachtsheim
DOI:10.1021/acs.orglett.9b01350
日期:2019.7.19
The direct hydroxylation of 2-aryloxazolines via a deprotonative magnesiation using TMPMgCl center dot LiCl and subsequent oxidation with molecular oxygen or air as a green oxidant is reported. This method proceeds under mild conditions at room temperature with high regioselectivity and chemoselectivity. The obtained phenols exhibit tunable luminescence properties, induced by excited-state intramolecular proton transfer. This method opens a new opportunity for the sustainable synthesis of luminescent organic molecules.