Results 31 to 40 of about 330,962 (287)
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
doaj +1 more source
One-pot radioiodination of aryl amines via stable diazonium salts: preparation of 125I-imaging agents [PDF]
, 2017 An operationally simple, one-pot, two-step tandem procedure that allows the incorporation of radioactive iodine into aryl amines via stable diazonium salts is described.
Luthra, Sajinder K. +4 more
core +2 more sources
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
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
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
doaj +1 more source
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
Recent developments in the Suzuki-Miyaura reaction: 2010-2014 [PDF]
, 2015 The Suzuki-Miyaura reaction (SMR), involving the coupling of an organoboron reagent and an organic halide or pseudo-halide in the presence of a palladium or nickel catalyst and a base, has arguably become one of most utilized tools for the construction ...
Maluenda, Irene, Navarro, Oscar
core +2 more sources
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
doaj +1 more source