Results 11 to 20 of about 961,304 (219)

Fabrication of copper(II)-coated magnetic core-shell nanoparticles Fe3O4@SiO2-2-aminobenzohydrazide and investigation of its catalytic application in the synthesis of 1,2,3-triazole compounds

open access: yesScientific Reports, 2021
In the present work, an attempt has been made to synthesize the 1,2,3-triazole derivatives resulting from the click reaction, in a mild and green environment using the new copper(II)-coated magnetic core–shell nanoparticles Fe3O4@SiO2 modified by isatoic
H. Rajabi-Moghaddam   +2 more
doaj   +1 more source

FDA-Approved Small Molecules in 2022: Clinical Uses and Their Synthesis

open access: yesPharmaceutics, 2022
This review describes the recently FDA-approved drugs (in the year 2022). Many of these products contain active moieties that FDA had not previously approved, either as a single ingredient or as part of a combination.
Davide Benedetto Tiz   +5 more
doaj   +1 more source

Construction of N-Ferrocene Substituted Benzodihydrooxazoles via a Catalyst-Free Aza-Michael Addition/C(sp3)-O Bond Formation Tandem Reaction

open access: yesMolecules, 2023
A catalyst-free aza-Michael addition/C(sp3)-O bond formation tandem reaction of substituted amino ferrocenes with quinone esters was developed, which provided a green and efficient strategy for the construction of a C(sp3)-O bond from C(sp3)-H, and a ...
Mingliang Zhang   +6 more
doaj   +1 more source

Dearomative 1,4-difunctionalization of naphthalenes via palladium-catalyzed tandem Heck/Suzuki coupling reaction

open access: yesNature Communications, 2020
Naphthalene is a challenging arene towards transition-metal-catalyzed dearomative difunctionalization. Here, the authors show that naphthalene may act as a masked conjugated diene in palladium-catalyzed dearomative 1,4-diarylation or 1,4-vinylarylation ...
Bo Zhou   +6 more
doaj   +1 more source

Vinylation of N-Heteroarenes through Addition/Elimination Reactions of Vinyl Selenones

open access: yesMolecules, 2023
A new protocol for the synthesis of N-vinyl azoles using vinyl selenones and azoles in the presence of potassium hydroxide was developed. This reaction proceeded under mild and transition metal-free conditions through an addition/elimination cascade ...
Martina Palomba   +5 more
doaj   +1 more source

New Halogen-Containing Drugs Approved by FDA in 2021: An Overview on Their Syntheses and Pharmaceutical Use

open access: yesMolecules, 2022
This review describes the recent Food and Drug Administration (FDA)-approved drugs (in the year 2021) containing at least one halogen atom (covalently bound).
Davide Benedetto Tiz   +5 more
doaj   +1 more source

Synthesis of Branch Fluorinated Cationic Surfactant and Surface Properties

open access: yesJournal of Chemistry, 2014
A novel fluorinated quaternary ammonium salt cationic surfactant N,N,N-trimethyl-2-[[4-[[3,4,4,4-tetrafluoro-2-[1,2,2,2-tetrafluoro-1-(trifluoromethyl)ethyl]-1,3-bis(tri-fluoromethyl)-1-buten-1-yl]oxy]-benzoyl]amino]-iodide (FQAS) was synthesized ...
Hongke Wu   +3 more
doaj   +1 more source

Preparation of Silica Aerogel and Its Adsorption Performance to Organic Molecule

open access: yesAdvances in Materials Science and Engineering, 2014
Hydrophobic and lipophilic silica aerogel was prepared from water-glass by gelling, aging, silylation, and drying under atmospheric pressure and characterized by FT-IR and SEM.
Hong-xin Shi   +3 more
doaj   +1 more source

Bismuth-Based Free-Standing Electrodes for Ambient-Condition Ammonia Production in Neutral Media

open access: yesNano-Micro Letters, 2020
Electrocatalytic nitrogen reduction reaction is a carbon-free and energy-saving strategy for efficient synthesis of ammonia under ambient conditions. Here, we report the synthesis of nanosized Bi2O3 particles grown on functionalized exfoliated graphene ...
Ying Sun   +9 more
doaj   +1 more source

Study on Method and Mechanism of Noble Metals Photoelectric Deposition by Directly Utilizing Solar Energy

open access: yesAdvanced Energy & Sustainability Research, 2023
The recovery of noble metals is crucial in terms of resource utilization and ecological environment. Herein, a green strategy for the recovery of three noble metals, Au, Ag, and Pt, by photoelectric deposition at the cathode without external voltage is ...
Yuewen Li   +8 more
doaj   +1 more source

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