نتایج جستجو برای: imidazoles

تعداد نتایج: 3709  

2014
Yogesh Kumar Vijay Bahadur Anil Kumar Singh Virinder Singh Parmar Erik V Van der Eycken Brajendra Kumar Singh

A microwave-assisted synthesis of 2-(4-((1-phenyl-1H-1,2,3-triazol-4-yl)methoxy)phenyl)-1H-benzo[d]imidazoles from a phenylazide, propargyloxybenzaldehyde and a 1,2-diaminobenzene is proposed.

Journal: :Chemical communications 2015
Jorge S Valera Joaquín Calbo Rafael Gómez Enrique Ortí Luis Sánchez

The supramolecular polymerization of pyrene imidazoles 1 and 2, governed by H-bonding and C-H···π interactions, yields aggregates showing the characteristic bluish emission pattern of pyrene-based monomers.

Journal: :Journal of biochemistry 1998
Y K Li H S Hsu L F Chang G Chen

Series of 4-arylimidazoles, omega-N-acylhistamines and 4-(omega-phenylalkyl)imidazoles were synthesized in order to probe the active site topology of sweet almond beta-glucosidase. These imidazole derivatives were shown to be very powerful competitive inhibitors. Among the 20 tested compounds, omega-N-benzoylhistamine and 4-(3'-phenylpropyl)imidazole are the most potent inhibitors of the enzyme...

Journal: :Chemical communications 2012
Guanyinsheng Qiu Jie Wu

Carbodiimide reacts with isocyanide catalyzed by copper(i) iodide, leading to benzoimidazo[1,5-a]imidazoles in good yields. This reaction is efficient, and proceeds through a formal [3+2] cycloaddition and C-N coupling.

Journal: :Annals of the Rheumatic Diseases 1969

Journal: :Canadian Journal of Chemistry 1982

Journal: :Chemical communications 2011
Anahit Pews-Davtyan Matthias Beller

Starting from commercially available amines and propargylamides a variety of substituted imidazoles were synthesized via a novel hydroamination-cyclization sequence. The target compounds are obtained in good to excellent yields in the presence of catalytic amounts of zinc triflate.

Journal: :Journal of Scientific Research 2023

An efficient, simple, and green four-component reaction for synthesizing 1,2,4,5-tetrasubstituted imidazoles is developed. In present work exploring the use of Samarium triflate as a heterogeneous catalyst aldehydes, aromatic amines, benzil, ammonium acetate. The current approach offers many advantages, such excellent yields, shortening time, reusability catalyst, mild conditions.

Journal: :journal of nanostructures 2012
a. bamoniri s. rohani

a general synthetic route to the synthesis of imidazoles has been developed using nano sbcl5/sio2 under solvent-free conditions. the multi-component reactions of aldehydes, benzil and ammonium acetate were carried out to afford some trisubstituted imidazole derivatives. this method provides several advantages like simple work-up, environmentally benign, and shorter reaction times along with hig...

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