Application of cobalt phthalocyanine as a nanostructured catalyst in the synthesis of biological henna-based compounds
作者:Mohammad Dashteh、Maliheh Safaiee、Saeed Baghery、Mohammad Ali Zolfigol
DOI:10.1002/aoc.4690
日期:2019.4
The present investigation describes synthesis of a good range of henna‐based compounds in the presence of novel nano cobaltphthalocyanine like molten salt (tetra‐2,3‐pyridiniumporphyrazinato cobalt tribromomethanide) [Co (TPPABr)]CBr3 as an efficient, recyclable and thermally stable heterogeneous catalyst.
A pragmatic and swift method for the synthesis of Benzo[a]pyrano[2,3-c]phenazine derivatives via one pot, multicomponent strategy by employing β-cyclodextrin in EtOH:H2O (1:1) solvent at 70 °C has been documented here. Utilization of supramolecular catalyst β-cyclodextrin which is highly efficient, green, biodegradable and reusable catalyst augments the synthesis amazingly, is the key feature of the
Résumé An efficient one-pot quantitative procedure for the preparation of functionalized benzo[a]pyrano[2,3-c]phenazine derivatives from four-component reaction of 2-hydroxynaphthalene-1,4-dione, o-phenylenediamine, aldehydes, and malononitrile in the presence of nano CuO as the catalyst has been developed. The copper(II) oxide nanoparticles can be recovered and reused several times without loss of its activity.
An efficient four-component domino protocol for the rapid and green synthesis of functionalized benzo[a]pyrano[2,3-c]phenazine derivatives using caffeine as a homogeneous catalyst
A one-pot, two-step procedure has been used to synthesize functionalized benzo[a]pyrano[2,3-c]phenazine derivatives from a four-component condensation reaction of 2-hydroxynaphthalene-1,4-dione, o-phenylenediamine, aldehydes, and malononitrile in the presence of 1,3,7-trimethylpurine-2,6-dione (caffeine) as an expedient and reusable solid base catalyst. This new procedure has the following advantages: operational simplicity, short reaction times, environmentally friendly, easy work-up, and all the products were obtained in excellent yields.
Multicomponent Synthesis of Poly-Substituted Benzo[<i>a</i>]pyrano[2,3-<i>c</i>]phenazine Derivatives under Microwave Heating
作者:Shu-Liang Wang、Fei-Yue Wu、Chuang Cheng、Ge Zhang、Yin-Ping Liu、Bo Jiang、Feng Shi、Shu-Jiang Tu
DOI:10.1021/co1000376
日期:2011.3.14
one-pot two-step tandem synthesis of highly functionalized benzo[a]pyrano[2,3-c]phenazine derivatives via microwave-assisted multicomponent reactions of 2-hydroxynaphthalene-1,4-dione, diamines, aldehydes, and malononitrile is reported. The procedures are facile, avoiding time-consuming and costly syntheses, tedious workup, and purifications of precursors, as well as protection/deprotection of functional