describe a practical and efficient one‐pot multicomponent reaction for the synthesis of α‐ketotriazoles from readily available buildingblocks such as methyl ketones, N,N‐dimethylformamide dimethyl acetal, and organic azides with 100 % regioselectivity. This reaction is enabled by the in situ formation of an enaminone intermediate followed by its 1,3‐dipolar cycloaddition reaction with an organic azide
Development of benzothiazole ‘click-on’ fluorogenic dyes
作者:Jianjun Qi、Ching-Hsuan Tung
DOI:10.1016/j.bmcl.2010.11.009
日期:2011.1
'Click-on' fluorogenic reaction: a non-fluorescent benzothiazole with an electron-deficient alkyne group at 2-position reacts with azide containing molecules could form fluorescent adducts. (C) 2010 Elsevier Ltd. All rights reserved.
Design and the synthesis of
<scp>1‐heteroaryl</scp>
‐1,2,3‐triazoles connected to coumarins via ether linker
作者:Muthipeedika Nibin Joy、Nikolai Beliaev、Tetyana V. Beryozkina、Vasiliy A. Bakulev
DOI:10.1002/jhet.4025
日期:2020.8
In this paper, we report an efficient and versatile methodology for the synthesis of a series of novel heteroaryl‐1,2,3‐triazoles connected to 4‐methylcoumarin (4‐methyl‐2H‐chromen‐2‐one) via oxymethylene linker. The desired molecules were accessed by both two‐step synthesis and the one‐pot copper catalyzed cycloaddition reaction of heteroaromatic azides with coumarin containing acetylenes. The developed
An Easy Access to Aryl Azides from Aryl Amines under Neutral Conditions<sup />
作者:Jagattaran Das、Santoshkumar N. Patil、Riti Awasthi、C. Prasad Narasimhulu、Sanjay Trehan
DOI:10.1055/s-2005-869974
日期:——
A variety of substituted aryl amines were transformed into aryl azides using t-BuONO and moist NaN3 in t-BuOH in good to excellent yields. Smooth transformation was observed with anilines, having electron withdrawing and donating groups. Both acid- and base-sensitive groups survived the reaction conditions.
Triazolbenzo[d]thiazoles: Efficient synthesis and biological evaluation as neuroprotective agents
作者:Belem Avila、Aaron Roth、Heather Streets、Donard S. Dwyer、Mark J. Kurth
DOI:10.1016/j.bmcl.2012.07.022
日期:2012.9
A number of (1H-1,2,3-triazol-1-yl)benzo[d]thiazoles were synthesized utilizing a versatile Cu-catalyzed azide–alkyne click reaction (CuAAC) on tautomeric benzo[4,5]thiazolo[3,2-d]tetrazole (1) and 2-azidobenzo[d]thiazole (2) starting materials. Moreover, one of the resulting products of this investigation, triazolbenzo[d]thiazole 22, was found to possess significant neuroprotective activity in human
利用互变异构苯并[4,5]噻唑啉上的多功能铜催化叠氮化物-炔点击反应(CuAAC)合成了许多(1 H -1,2,3-三唑-1-基)苯并[ d ]噻唑。 3,2- d ]四唑( 1 )和2-叠氮基苯并[ d ]噻唑( 2 )起始材料。此外,本研究的产物之一三唑苯并[ d ]噻唑22被发现对人神经母细胞瘤 (SH-SY5Y) 细胞具有显着的神经保护活性。