Results 21 to 30 of about 327,777 (207)
Direct acylation of aryl amines using dimethylformamide and dimethylacetamide as the acyl resources
Journal of Saudi Chemical Society, 2016 The treatment of aryl amines with dimethylformamide (DMF) and dimethylacetamide (DMA) in the presence of hydrochloric acid brings about efficient N-acylation to give the corresponding aryl formamides and aryl acetamides in acceptable to excellent yields.
Qing Zhang, Cui Chen
doaj +1 more source
Synthesis of 2-aryl-benzothiazoles via Ni-catalyzed coupling of benzothiazoles and aryl sulfamates
Heterocyclic Communications, 2020 2-Aryl-benzothiazoles have been successfully synthesized via a simple coupling reaction between benzothiazoles and aryl sulfamates using a nickel catalyst. The nickel catalyst is inexpensive, reusable and commercially available.
Yu Xiaofeng +4 more
doaj +1 more source
Visible-Light Photocatalytic Reduction of Aryl Halides as a Source of Aryl Radicals
Molecules, 2022 Aryl- and heteroaryl units are present in a wide variety of natural products, pharmaceuticals, and functional materials. The method for reduction of aryl halides with ubiquitous distribution is highly sought after for late-stage construction of various ...
Jihong Lan +4 more
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Palladium-catalyzed acetylation of arenes. [PDF]
, 2014 A simple method for the preparation of aryl methyl ketones is reported. The transformation involves the Pd-catalyzed coupling of an acyl anion equivalent, acetyltrimethylsilane, with aryl bromides to afford the corresponding acetylated arenes in ...
Garg, Neil K, Ramgren, Stephen D
core +1 more source
Nickel-Mediated Hydrogenolysis of C–O Bonds of Aryl Ethers: What Is the Source of the Hydrogen? [PDF]
, 2012 Mechanistic studies of the hydrogenolysis of aryl ethers by nickel were undertaken with (diphosphine)aryl methyl ethers. A Ni(0) complex containing Ni–arene interactions adjacent to the aryl–O bond was isolated.
Agapie, Theodor +4 more
core +3 more sources
Molecules, 2016 An investigation on the effect of substituent at the 2-position of mono-substituted quinoxalines in the synthesis of di-substituted quinoxaline derivatives via nucleophilic substitution reactions, is reported.
Ndumiso Thamsanqa Ndlovu +1 more
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Microwave-mediated synthesis of N-methyliminodiacetic acid (MIDA) boronates [PDF]
, 2014 A library of over 20, mainly aryl or heteroaryl, N-methyliminodiacetic acid (MIDA) boronates have been synthesised. A rapid microwave-mediated (MW) method (5–10 min) has been developed using polyethylene glycol 300 (PEG 300) as solvent.
Close, Adam J +3 more
core +1 more source
Palladium-Catalyzed α-Arylation of Aryl Nitromethanes
Organic Letters, 2015 Catalytic conditions for the α-arylation of aryl nitromethanes have been discovered using parallel microscale experimentation, despite two prior reports of the lack of reactivity of these aryl nitromethane precursors. The method efficiently provides a variety of substituted, isolable diaryl nitromethanes.
VanGelder, Kelsey F. +1 more
openaire +2 more sources
An isoxazole strategy for the synthesis of 4-oxo-1,4-dihydropyridine-3-carboxylates
Beilstein Journal of Organic Chemistry, 2022 A method has been developed for the preparation of 2-alkyl-6-aryl-, 2-aryl-6-aryl and 2,6-diaryl-5-aryl/hetaryl-substituted methyl 4-oxo-1,4-dihydropyridine-3-carboxylates by Mo(CO)6-mediated ring expansion of methyl 2-(isoxazol-5-yl)-3-oxopropanoates ...
Timur O. Zanakhov +3 more
doaj +1 more source
Molecules, 2022 Natural cytokinines are a promising group of cytoprotective and anti-tumor agents. In this research, we synthesized a set of aryl carbamate, pyridyl urea, and aryl urea cytokinine analogs with alkyl and chlorine substitutions and tested their ...
Maxim Oshchepkov +8 more
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