Cu/Graphene/Clay Nanohybrid: A Highly Efficient Heterogeneous Nanocatalyst for Synthesis of New 5-Substituted-1<i>H</i>-Tetrazole Derivatives Tethered to Bioactive<i>N</i>-Heterocyclic Cores
bioactive N‐heterocyclic cores were synthesized through [3 + 2] cycloadditionreactions between alkyl nitriles (RCN) and NaN3 in the presence of Cu/aminoclay/reduced graphene oxide nanohybrid (Cu/AC/r‐GO nanohybrid) as a heterogeneous nanocatalyst in water/i‐PrOH (50:50, V/V) media at reflux condition. The influence of factors on a sample reaction including solvent type, temperature, and catalyst amount
在存在铜/氨基粘土/还原氧化石墨烯纳米杂化物(铜)的情况下,通过烷基腈(RCN)和NaN 3之间的[3 + 2]环加成反应,合成了一系列具有生物活性N杂环核的5位取代的1 H-四唑。/ AC / R-GO纳米杂化物)作为在水中的纳米催化剂的异构/我‐PrOH(50:50,V / V)介质在回流条件下。讨论了因素对样品反应的影响,包括溶剂类型,温度和催化剂用量。该当前协议具有许多优点,包括价格便宜,对环境无害,基材范围广,产率高以及易于处理。该协议中使用的Cu / AC / r-GO是一种低成本催化剂,被证明具有相当大的化学和热稳定性。这种非吸湿性催化剂可以轻松回收,再利用和存储,以进行许多连续的反应,而不会显着降低反应活性。
Perfluorobutyl iodide-assisted direct cyanomethylation of azoles and phenols with acetonitrile
作者:Juan Zhang、Wei Wu、Xinfei Ji、Song Cao
DOI:10.1039/c5ra02242h
日期:——
perfluorobutyl iodide-assisted transition-metal-free cyanomethylation of azoles and phenols with acetonitrile in the presence of NaH has been developed. The reaction proceeded smoothly under mild reaction conditions to give the cyanomethylated products in moderate to high yields. A mechanism involving the cyanomethyl radical through C–H bond cleavage in acetonitrile was proposed.
An Efficient Protocol for Facile Synthesis of New 5-Substituted-1<i>H</i>-Tetrazole Derivatives Using Copper-Doped Silica Cuprous Sulfate (CDSCS) as Heterogeneous Nano-Catalyst
作者:Mohammad Navid Soltani Rad
DOI:10.5935/0103-5053.20160138
日期:——
A facile and highly efficient protocol for synthesis of new 5-substituted-1H-tetrazoles derivatives using copper-doped silica cuprous sulfate (CDSCS) is described. In this method, the cycloaddition reaction of sodium azide with structurally diverse nitriles involving bioactive N-heterocyclic cores exploiting CDSCS in refluxing H2O/i-PrOH (1:1, v/v) furnishes the corresponding 5-substituted1H-tetrazoles in good to excellent yields (up to 93%). The influence of parameters effective in progress of reaction including solvent type, temperature and catalyst was studied and discussed. In this protocol, CDSCS was proved to be an efficient heterogeneous nano-catalyst to easily achieve the new tetrazole derivatives. The advantages of CDSCS in current protocol known are its cheapness, thermal and chemical stability, ease of recyclability and reusability for several consecutive runs without significant decline in its reactivity.
Synthesis, Antifungal Evaluation and Molecular Docking Studies of Some Tetrazole Derivatives
作者:Mohammad Hosein Afsarian、Mojtaba Farjam、Elham Zarenezhad、Somayeh Behrouz、Mohammad Navid Soltani Rad
DOI:10.17344/acsi.2019.4992
日期:——
A facile and simple protocol for the [3+2] cycloaddition of alkyl nitriles (RCN) with sodium azide (NaN 3 ) in the presence of copper bis(diacetylcurcumin) 1,2-diaminobenzene Schiff base complex, SiO 2 -[Cu-BDACDABSBC] as a heterogeneous catalyst in the presence of ascorbic acid and a solution of water/ i -PrOH (50:50, V/V) media at reflux condition is described. The supported catalyst was prepared