Results 21 to 30 of about 399,883 (354)
Manganese carbonyl-mediated reactions of azabutadienes with phenylacetylene, methyl acrylate and other unsaturated molecules [PDF]
, 2004 Reaction of PhCH₂Mn(CO)₅ with l,4-di-aryl-1-aza-1,3-butadienes gave substituted pyrrolinonyl rings which were η⁴-coordinated to a Mn(CO)₃ group. These are formed by intramolecular CO insertion into a (non-isolated) cyclomanganated intermediate, followed ...
Mace, Wade +3 more
core +2 more sources
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
2-aminophenols containing electron-withdrawing groups from N-aryl hydroxylamines [PDF]
, 2010 Reaction of substituted N-aryl hydroxylamines with methanesulfonyl chloride, p-toluenesulfonyl chloride, or trifluoromethanesulfonic anhydride under basic conditions leads to the rearranged 2-aminophenols (45-94%).
Cooper, Anthony W. J. +3 more
core +1 more source
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
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
Boron Arylations of Subporphyrins with Aryl Zinc Reagents [PDF]
Chemistry – A European Journal, 2016 AbstractBoron arylations of B‐(methoxo)triphenylsubporphyrin have been developed with a combined use of ArZnI⋅LiCl and trimethylsilyl chloride. Aryl zinc reagents bearing bromo, cyano, amide, and ester groups can be employed for the B‐arylation reaction to provide the corresponding B‐arylated subporphyrins in moderate yields.
Kotani, Ryota +3 more
openaire +4 more sources
Synthesis of Morphinans through Anodic Aryl‐Aryl Coupling
The Chemical Record, 2021 AbstractThe morphinans are an important class of structurally fascinating and physiologically important natural products as exemplified by the famous opium alkaloids of the morphine family. Although this class of secondary metabolites from the juice of the opium poppy capsule was already used for medicinal purposes thousands of years ago, chemical ...
Nina Vierengel +3 more
openaire +5 more sources
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
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
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