Microwave Synthesis of 5-Substituted 1<i>H</i>-Tetrazoles Catalyzed by Bismuth Chloride in Water
作者:Adiel Coca、Liana Feinn、Joshua Dudley
DOI:10.1080/00397911.2014.989451
日期:2015.4.18
Abstract Bismuth chloride was used to catalyze the [2 + 3] cycloaddition between sodium azide with aryl nitriles, aliphatic nitriles, and vinyl nitriles. A number of 5-substituted1H-tetrazoles were synthesized in water or isopropanol/water mixtures using microwave heating. Good yields were obtained for these reactions when heated for 1 h at 120–160 °C in a 3:1 isopropanol/water mixture. A few of the
Abstract In this paper, diphenyl phosphate creatine was successfully immobilized on Fe3O4 nanoparticles and used as the highly efficientcatalyst for the aza-Michael reaction of 5-substituted tetrazole and α,β-unsaturated carbonyl. The prepared nanocatalyst was fully analyzed by various techniques such as Fourier-transform Infrared Spectroscopy (FT-IR), Field Emission Scanning electron microscope (FE-SEM)
摘要 本文成功地将磷酸二苯酯肌酸固定在Fe 3 O 4纳米颗粒上,并用作5-取代四唑与α,β-不饱和羰基的氮杂-迈克尔反应的高效催化剂。通过傅立叶变换红外光谱(FT-IR),场发射扫描电子显微镜(FE-SEM),振动样品磁强计(VSM),热重分析(TGA)和X射线等各种技术对制备的纳米催化剂进行了全面分析。衍射(XRD)。该方法具有许多优点,例如后处理简单,产率高和反应时间短。 图形摘要 本文讨论了一种 通过 四氢呋喃合成取代四唑的方法 Fe 3 O 4 @磷酸二苯酯肌酸纳米颗粒作为新型催化剂的aza-Michael反应。
Antibacterial Assessment of Heteroaryl, Vinyl, Benzyl, and Alkyl Tetrazole Compounds
作者:Joshua Dudley、Liana Feinn、Heather DeFrancesco、Erica Lindsay、Adiel Coca、Elizabeth Lewis Roberts
DOI:10.2174/1573406413666171120162420
日期:2018.7.12
antibacterial properties of certain tetrazole derivatives have been described. We have previously reported the antibacterial properties of aryl 1Htetrazole compounds. Objective: To study the antibacterial activity of 5-substituted heteroaryl, vinyl, benzyl, and alkyl 1H-tetrazole derivatives. Methods: The antibacterial properties of heteroaryl, vinyl, benzylic, and aliphatic tetrazole derivatives were investigated
Fast Microwave-Assisted Preparation of Aryl and Vinyl Nitriles and the Corresponding Tetrazoles from Organo-halides
作者:Mathias Alterman、Anders Hallberg
DOI:10.1021/jo0009954
日期:2000.11.1
Aryl and vinyl nitriles have been prepared in very high yields from the corresponding bromides using palladium-catalyzed reactions with microwave irradiation employed as the energy source. Furthermore, flash heating was used successfully for the conversion of these nitriles into aryl and vinyl tetrazoles by cycloaddition reactions. One-pot transformation of aryl halides directly to the aryl tetrazoles
CuFe2O4 nanoparticles: a magnetically recoverable and reusable catalyst for the synthesis of 5-substituted 1H-tetrazoles
作者:B. Sreedhar、A. Suresh Kumar、Divya Yada
DOI:10.1016/j.tetlet.2011.04.094
日期:2011.7
An efficient and economical protocol for the synthesis of 5-substituted1H-tetrazolesfrom various nitriles and sodiumazide is described using magnetically recoverable and reusable CuFe2O4 nanoparticles. A wide variety of aryl nitriles underwent [2+3] cycloaddition under mild reaction conditions to afford tetrazoles in good to excellent yields. The catalyst was magnetically separated and reused five
使用磁性可回收和可重复使用的CuFe 2 O 4纳米粒子,描述了从各种腈和叠氮化钠合成5取代的1 H-四唑的有效而经济的方案。各种芳基腈在温和的反应条件下进行[2 + 3]环加成反应,以良好或极好的收率得到四唑。将该催化剂磁分离并重复使用五次,而不会显着降低催化活性。