Iridium-Catalyzed ortho-C–H Borylation of Thioanisole Derivatives Using Bipyridine-Type Ligand
摘要:
A simple iridium catalytic system was developed that allows for a variety of 2-borylthioanisoles to be easily synthesized via ortho-selective C-H borylation of thioanisole derivatives. Once introduced, boryl and methylthio groups were converted by palladium-catalyzed transformations. Density functional theory calculations revealed that weak interactions, such as hydrogen bonding between the C-H bond of the SCH3 group and the oxygen atom of the boryl ligand, control the ortho-selectivity.
Provided is a rare earth metal complex including a rare earth metal atom and a β-diketone compound coordinated to the rare earth metal atom, the β-diketone compound being represented by the following Formula (1). In Formula (1), R represents a monovalent aromatic hydrocarbon group or a monovalent aromatic heterocyclic group.
Iridium/Bipyridine-Catalyzed <i>ortho</i>-Selective C–H Borylation of Phenol and Aniline Derivatives
作者:Hong-Liang Li、Motomu Kanai、Yoichiro Kuninobu
DOI:10.1021/acs.orglett.7b02936
日期:2017.11.3
ortho-selective C–H borylation of phenol and anilinederivatives has been successfully developed. Iridium/bipyridine-catalyzed C–H borylation generally occurred at the meta- and para-positions of aromatic substrates. Introduction of an electron-withdrawing substituent on the bipyridine-type ligand and a methylthiomethyl group on the hydroxy and amino groups of the phenol and aniline substrates, however, dramatically
Promising Antifungal and Antibacterial Agents Based on 5‐Aryl‐2,2′‐bipyridines and Their Heteroligand Salicylate Metal Complexes: Synthesis, Bioevaluation, Molecular Docking
challenge: A series of new 5-aryl-2,2′-bipyridines and their (polyfluoro)salicylatemetalcomplexes was synthesized. Their antimicrobial activity was evaluated in vitro against eight strains of dermatophytes, seven strains of Candida yeasts, eight strains of Gram-positive and two strains of Gram-negative bacteria. Using moleculardocking, we proposed that anti-staphylococcal action proceeds through the inhibition
Alternative Route Toward Nitrones: Experimental and Theoretical Findings
作者:Damir A. Safin、Mariusz P. Mitoraj、Maria G. Babashkina、Piotr Kubisiak、Koen Robeyns、Yaroslav Filinchuk
DOI:10.1021/acs.joc.6b02821
日期:2017.2.3
Nitrones are important building blocks for natural and biologically active compounds, used as spin-trap reagents and therapeutic agents. All this makes nitrones intriguing and valuable compounds for fundamental studies and as useful chemicals in various synthetic strategies. Therefore, nitrones are still of great interest and in the limelight of researches. With our initial goal to solve synthetic
Cross Mannich Reaction of Aldehydes; Efficient Synthesis of Substituted Pyridines
作者:Nikolaus Risch、Andreas Winter
DOI:10.1055/s-2003-42435
日期:——
Symmetrically and unsymmetrically substitutedpyridines were obtained in highly efficient one-pot procedures starting from α-unbranched aldehydes and iminium salts.