Research on antibacterial and antifungal agents. 16. Synthesis and antifungal activities of 1-[α-(1-naphthyl)benzyl]imidazole derivatives and related 2-naphthyl isomers
摘要:
Some 1-arylmethylimidazoles bearing a naphthyl group at the a position of benzyl moiety have been synthesized and tested as antifungal agents against Candida albicans and Candida spp. Such derivatives resemble bifonazole and naftifine, two important antimycotic agents of clinical use. Various compounds were found highly active when tested against Candida strains in comparison with bifonazole, miconazole, clotrimazole and ketoconazole.
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‐Heterocyclic‐Carbene‐Coordinated Palladium Catalysts for 1,2‐Addition of Arylboron Compounds to Carbonyl Compounds
作者:Yuta Okuda、Masahiro Nagaoka、Tetsuya Yamamoto
DOI:10.1002/cctc.202001464
日期:2020.12.16
primary, secondary, and tertiary alcohols by the 1,2‐addition of arylboronic acids or boronates to carbonyl compounds, including unactivated ketones, using novel bulky yet flexible N‐heterocyclic carbene (NHC)‐coordinated 2,6‐di(pentan‐3‐yl)aniline (IPent)‐based cyclometallated palladium complexes (CYPs) as catalysts is reported. The PhS‐IPent‐CYP‐catalyzed reactions are efficient at low catalyst loadings
Addition reaction of arylboronic acids to aldehydes and α,β-unsaturated carbonyl compounds catalyzed by conventional palladium complexes in the presence of chloroform
作者:Tetsuya Yamamoto、Michiko Iizuka、Hiroto Takenaka、Tetsuo Ohta、Yoshihiko Ito
DOI:10.1016/j.jorganchem.2008.12.032
日期:2009.4
Arylboronic acids react with aldehydes and α,β-unsaturatedcarbonylcompounds in the presence of a base and a catalytic amount of a palladium(0) complex with chloroform, affording the corresponding addition products in good yields, and chiral benzhydrol was obtained with up to 43% e.e. using (S,S)-bppm as a ligand. General palladium complexes have no catalytic activity without chloroform. Because chloroform
Rhodium-catalyzed benzylic fluorination of trichloroacetimidates
作者:Qi Zhang、Jason C. Mixdorf、Gilbert J. Reynders、Hien M. Nguyen
DOI:10.1016/j.tet.2015.04.066
日期:2015.9
via rhodium-catalyzed nucleophilic fluorination of benzylic trichloroacetimidates. A variety of naphthyl, phenyl, and pyridinyl trichloroacetimidates were fluorinated with Et3N·3HF reagent to provide fluorine-containing compounds in moderate to high yields under mild and operationally simple conditions. Preliminary mechanistic studies suggest that benzylic fluorination of trichloroacetimidate substrates
The combination of 0 valent palladium precursor and bromo-substituted 1,3-diaryl-imidazoline carbene ligand precursor such as 1-(2-bromophenyl)-3-(2,6-diisopropylphenyl)-imidazolinium chloride 1a exhibited high catalytic activity for the 1,2-addition of arylboronic acids to aldehydes including aqueous formaldehyde. (C) 2014 Elsevier Ltd. All rights reserved.
Palladium-imidazolinium carbene-catalyzed arylation of aldehydes with arylboronic acids in water
The catalytic arylation of aldehydes with arylboronic acids in only water was found to be achieved using the palladium/thioether-imidazolinium chloride system in good to excellent yields. This catalytic process showed high tolerance for a broad range of substrates, giving a variety of carbinol derivatives with 2.0-3.0 mol % of the catalyst. (C) 2010 Elsevier Ltd. All rights reserved.