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.
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.
Theophylline as a new and green catalyst for the one-pot synthesis of spiro[benzo[ a ]pyrano[2,3- c ]phenazine] and benzo[ a ]pyrano[2,3- c ]phenazine derivatives under solvent-free conditions
A green, convenient, high yielding and one-pot procedure for the synthesis of novel spiro[benzo[a]pyrano[2,3-c]phenazine] derivatives by domino multi-component condensation reaction between 2-hydroxynaphthalene-1,4-dione, benzene-1,2-diamines, ninhydrine, and malononitrile in the presence of a catalytic amount of 1,3-dimethyl-7H-purine-2,6-dione (theophylline) as an expedient, eco-friendly and reusable
Fulvic Acid: An Efficient and Green Catalyst for the One-pot Four-component Domino Synthesis of Benzo[<i>a</i>]phenazine Annulated Heterocycles in Aqueous Medium
Fulvic acid is a naturally occurring organic compound found in soil and plants. It is recognized for its ability to balance and energize cell biological processes. Fulvic acid literally transforms ...