نتایج جستجو برای: alcohol into amides

تعداد نتایج: 1738730  

1997
Elizabeth A. Thomas Benjamin F. Cravatt Patria E. Danielson Norton B. Gilula Gregor Sutcliffe

Fatty acid amide hydrolase (FAAH) is a membranebound enzyme activity that degrades neuromodulatory fatty acid amides, including oleamide and anandamide. A single 2.5-kb FAAH mRNA is distributed throughout the rat CNS and accumulates progressively between embryonic day 14 and postnatal day 10, remains high until postnatal day 30, then decreases into adulthood. FAAH enzymatic activity, as measure...

Journal: :Tetrahedron 2009
Brett P Fors Karin Dooleweerdt Qingle Zeng Stephen L Buchwald

A catalyst based on a new biarylphosphine ligand (3) for the Pd-catalyzed cross-coupling reactions of amides and aryl chlorides is described. This system shows the highest turnover frequencies reported to date for these reactions, especially for aryl chloride substrates bearing an ortho substituent. An array of amides and aryl chlorides were successfully reacted in good to excellent yields.

Journal: :Chemical communications 2011
Ya Du Todd K Hyster Tomislav Rovis

An efficient strategy for the oxidative carbonylation of aromatic amides via C-H/N-H activation to form phthalimides using an Rh(III) catalyst has been developed. The reaction shows a preference for C-H bonds of electron-rich aromatic amides and tolerates a variety of functional groups.

Journal: :Organic & biomolecular chemistry 2011
Gabriella Buscemi Philip W Miller Steven Kealey Antony D Gee Nicholas J Long Jan Passchier Ramon Vilar

Palladium dimers with sterically hindered phosphines have been shown to be excellent pre-catalysts for the aminocarbonylation of aryl halides to yield amides and one of them has been successfully employed as a pre-catalyst for the synthesis of (11)C-radiolabelled amides for PET imaging.

Journal: :Chemical communications 2012
Thomas-Xavier Métro Julien Bonnamour Thomas Reidon Jordi Sarpoulet Jean Martinez Frédéric Lamaty

The synthesis of various amides has been realised avoiding the use of any organic solvent from activation of carboxylic acids with CDI to isolation of the amides. Mechanochemistry was the key point of the process allowing rapid formation of the amide bond and efficient water-based purification of the final products.

Journal: :Chemical communications 2015
David Hymel Sutang Cai Qi Sun Rebecca S Henkhaus Chamani Perera Blake R Peterson

Mammalian cells acquire cholesterol, a critical membrane constituent, through multiple mechanisms. We synthesized mimics of cholesterol, fluorescent N-alkyl-3β-cholesterylamine-glutamic acids, that are rapidly incorporated into cellular plasma membranes compared with analogous cholesteryl amides, ethers, esters, carbamates, and a sitosterol analogue. This process was inhibited by ezetimibe, ind...

Journal: :Chemical communications 2014
Stacey L McDonald Qiu Wang

Selective α-amination and α-acylation of esters and amides have been developed, employing O-acylhydroxylamines as a dually reactive aminating and acylating reagent. Treatment of zinc enolates with O-acylhydroxylamines provides solely 1,3-dicarbonyl compounds under mild conditions. Introduction of a copper catalyst into the system shifts the reactivity entirely, yielding α-amination products exc...

بهرامی, مازیار, فرخی, احمد, قربانلو, مهرداد, نجات بخش, رضا,

Background and Objective: Alcohol is a teratogenic agent for humans and can easily pass through the placenta. Low doses of alcohol are commonly found in alcoholic drinks, therefore the purpose of this study was to investigate the histological changes of fetal rat livers influenced by low doses of alcohol consumption. Materials and Methods: In this experimental study, pregnant female rats wer...

Journal: :Advanced Synthesis & Catalysis 2022

A transition metal-free method for the cycloisomerization of propargylic amides to oxazoles was developed. The reaction utilizes in situ generated hydrogen chloride hexafluoroisopropanol (HFIP). With aid Design Experiments optimization a wide range substrates transformed into desired oxazoles. allows product formation without side reactions eliminating need extensive work-up and purification.

Journal: :Journal of the American Chemical Society 2009
Eric R Strieter Brijesh Bhayana Stephen L Buchwald

The copper-catalyzed N-arylation of amides, i.e., the Goldberg reaction, is an efficient method for the construction of products relevant to both industry and academic settings. Herein, we present mechanistic details concerning the catalytic and stoichiometric N-arylation of amides. In the context of the catalytic reaction, our findings reveal the importance of chelating diamine ligands in cont...

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