Functionalized Luminescent Silica Nanoparticles with Chelate Groups on Interface: Synthesis and Characterization

Design, synthesis and characterization of luminescent silica nanoparticles with chelate groups on surface as well as the synthesis of new organosilanes with amino and carboxyl groups for silica surface functionalization is presented. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3512

Reaction of N-(4,4-Diethoxybutyl)phosphamides with Chloro(diphenyl)phosphine. Synthesis of 2-(Diphenylphosphoryl)pyrrolidines

© 2020, Pleiades Publishing, Ltd. Abstract: The reaction of N-(4,4-diethoxybutyl)phosphamides with chloro(diphenyl)phosphine in chloroform in the presence of acetic acid gave previously unknown 2-(diphenylphosphoryl)pyrrolidines, and hydrolysis of the latter afforded 2-(diphenylphosphoryl)pyrrolidine

N-Phosphorylated Pyrrolidines: An Overview of Synthetic Approaches

© 2020 Georg Thieme Verlag. All rights reserved. Organophosphorus pyrrolidine derivatives possessing P-N bonds are a promising yet underexplored class of compounds. In this short review we overview the general approaches to these compounds described so far, with a special emphasis on their asymmetric synthesis. 1 Introduction 2 Synthesis of Pyrrolidine-Based P(III) Derivatives 3 Synthesis of Pyrrolidine-Based P(V) Derivatives 3.1 Phosphorylation of Pyrrolidines with P(V) Acid Chlorides 3.2 Phosphorylation of Pyrrolidines with P(V) Acid Esters 3.3 Syntheses via the Atherton-Todd Reaction 3.4 Oxidation of Pyrrolidine-Based P(III) Derivatives 4 Syntheses of N-Phosphorylpyrrolidines from Acyclic Precursors 5 Conclusions

Synthesis of Novel 2-Hetarylpyrrolidines via the Reaction of N-(4,4-diethoxybutyl)amidophosphates with C-nucleophiles

© 2020, Springer Science+Business Media, LLC, part of Springer Nature. [Figure not available: see fulltext.] The reactions of N-(4,4-diethoxybutyl)amidophosphates with С-nucleophiles in chloroform in the presence of trifluoroacetic acid provided new 2-hetarylpyrrolidines. The reaction proceeded under mild conditions and gave good yields in the absence of metal-based catalysts

Reaction of 3-(Arylmethylidene)-1-pyrrolines with Acetone. Synthesis of Norhygrine Derivatives

© 2020, Pleiades Publishing, Ltd. Abstract: An efficient procedure has been developed for the synthesis of analogs of the alkaloid norhygrine by reaction of 3-(arylmethylidene)-1-pyrrolines with acetone. The synthesized compounds have been converted to hydrazones by treatment with the corresponding substituted arylhydrazines

Synthesis and Antibacterial Activity of Sulfanilamides Containing Sterically Hindered Phenol Fragments

Abstract: New sulfanilamide derivatives containing sterically hindered phenol fragments have been synthesized via modification of the amino group by reaction with 3,5-di-tert-butyl-4-hydroxybenzyl acetate and diazotization followed by diazo coupling with 2,4-di-tert-butylphenol. 4-Aminobenzenesulfonamide derivatives at the sulfonamide group have been obtained by converting acetyl-protected 4-aminobenzenesulfonyl chloride to the corresponding sulfonohydrazide and reacting the latter with 3,5-di-tert-butyl-4-hydroxybenzyl acetate, sterically hindered hydroxybenzaldehydes, and N-(3,5-di-tert-butyl-4-hydroxybenzyl)isatin. Modification of sulfanilamide with sterically hindered phenol fragments significantly increased antibacterial activity

Synthesis of hybrid compounds by benzylation of acylhydrazones with 3,5-di-tert-butyl-4-hydroxybenzyl acetate

N-Benzylation of acylhydrazones of the hydroxybenzaldehyde series with 3,5-di-tert-butyl-4-hydroxybenzyl acetate was performed at room temperature in the absence of acid or base catalysts. Carboxamides do not react with 3,5-di-tert-butyl-4-hydroxybenzyl acetate under similar conditions. N-Benzylation of isoniazid and (diphenylphosphoryl)acetic acid hydrazones was shown to be an efficient method for the synthesis of new hybrid compounds containing moieties of biologically active acylhydrazones and sterically hindered phenols. N-Benzyl derivatives of isoniazid and (diphenylphosphoryl)acetic acid hydrazones containing a hydroxy group at the ortho position of the aromatic ring are formed as individual E isomers with respect to the C-N double bond

Synthesis of New α-Aminophosphonates Based on Cyclohexylamine

© 2020, Pleiades Publishing, Ltd. Abstract: A series of new α-aminophosphonates was synthesized based on the acid-catalyzed Kabachnik–Fields reaction involving diethyl phosphite, cyclohexylamine and substituted benzaldehyde. Structure of the reaction products was established by IR, NMR spectroscopy, and mass spectrometry methods