نتایج جستجو برای: amino functionalized chitosanm

تعداد نتایج: 227274  

2013
József Balog Zsuzsanna Riedl György Hajós

4-Substituted 1-bromoisoquinolin-3-amines were subjected to Suzuki coupling with o-nitrophenylboronic acid to yield 1-(2-nitrophenyl)isoquinolinamines, which participated in Cadogan cyclization with triethyl phosphite under microwave irradiation and pressure to yield fluorescent indazolo[3,2-a]isoquinolin-6-amines. The new compounds were also functionalized by transformation of the amino group.

Journal: :Organic letters 2006
David A Evans Hyun-Ji Song Keith R Fandrick

[Structure: see text] Enantioselective nitrone cycloadditions with beta-substituted alpha,beta-unsaturated 2-acyl imidazoles catalyzed by bis(oxazolinyl)pyridine-cerium(IV) triflate complexes 1 have been reported. The isoxazolidine products were efficiently transformed into densely functionalized beta'-hydroxy-beta-amino acid derivatives.

Journal: :The Analyst 2012
Heng Zhou Xiang Wang Ping Yu Xiaoming Chen Lanqun Mao

We report here a new voltammetric method for the sensitive and selective determination of Hg(2+) based on rational covalent functionalization of graphene oxide with cysteamine to form cysteamine-functionalized graphene through nucleophilic ring-opening reaction between the epoxy of graphene oxide and the amino group of cysteamine in KOH solution.

Journal: :Organic & biomolecular chemistry 2010
Fredrik Tinnis Hans Adolfsson

Active and selective catalysts for the asymmetric reduction of ketones, under transfer hydrogenation conditions, were obtained by combining [RhCl(2)Cp*](2), with a series of l-amino acid thioamide ligands functionalized with 1,2,3-triazoles. The obtained secondary alcohol products were formed with up to 93% ee.

Journal: :Chemical communications 2014
Iñigo Fernández Alfredo Sánchez Paula Díez Paloma Martínez-Ruiz Prospero Di Pierro Raffaele Porta Reynaldo Villalonga José M Pingarrón

A novel electrochemical assay to quantify transglutaminase activity is reported. The assay is based on the enzyme-controlled diffusion of Fe(CN)6(3-/4-) through amino-functionalized nanochannels of a mesoporous silica thin film on a Au surface in the presence of N-benzyloxycarbonyl-L-glutaminylglycine.

2010
Giuseppe Bruno Francesco Nicoló Massimiliano Cordaro Giovanni Grassi Francesco Risitano

The crystal structure of N-(3,9-dimethyl-4-phenyl-2,5-dioxo-3,4-dihydro-2H,5H-pyrano[3,2-c]chromen-3-yl)-N-methylbenzamide methanol monosolvate, C(28)H(23)NO(5)·CH(3)OH, has been determined at room temperature by X-ray diffraction. Structural parameters are discussed with reference to ab initio calculations.

Journal: :European journal of medicinal chemistry 2016
Elisa Deni Alicia Zamarrón Paola Bonaccorsi M Carmen Carreño Ángeles Juarranz Fausto Puntoriero Maria Teresa Sciortino María Ribagorda Anna Barattucci

Photodynamic therapy (PDT) is a minimally invasive procedure that can provide a selective eradication of neoplastic diseases by the combined effect of a photosensitizer, light and oxygen. New amino oligo(phenylene-ethynylene)s (OPEs), bearing hydrophilic glucoside terminations, have been prepared, characterized and tested as photosensitizers in PDT. The effectiveness of these compounds in combi...

Journal: :Batteries 2023

Organic electrode materials have received increasing attention in rechargeable batteries due to their earth abundance and variable structures. However, the practical application of most organic is limited by high solubility electrolyte. Herein, an insoluble amino-functionalized hexaazatriphenylene (defined as HATN-[NH2]3) electrolyte developed stable cathode material for lithium-ion (LIBs). The...

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