Zn(<scp>L</scp>-proline)<sub>2</sub>as a powerful and reusable organometallic catalyst for the very fast synthesis of 2-amino-4<i>H</i>-benzo[<i>g</i>]chromene derivatives under solvent-free conditions
One-pot synthesis of some 2-amino-4H-chromene derivatives using triethanolamine as a novel reusable organocatalyst under solvent-free conditions and its application in electrosynthesis of silver nanoparticles
2-amino-4H-chromene derivatives. Its advantages include short reaction time, high yields, low cost, and straightforward work-up. Triethanolamine is an efficient reusable catalyst. 2-Amino-4H-benzo[g]chromenes (ABgC) were applied as novel components of electro synthesis of silver nanoparticles.
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 green and one-pot synthesis of benzo[g]chromene derivatives through a multi-component reaction catalyzed by lipase
作者:Fengjuan Yang、Haoran Wang、Liyan Jiang、Hong Yue、Hong Zhang、Zhi Wang、Lei Wang
DOI:10.1039/c4ra13272f
日期:——
The synthesis of benzo[g]chromene derivatives through a multi-component reaction catalyzed by lipase is reported for the first time. This novel efficient method has the advantages of environmental friendliness, high yield and simple work-up. Moreover, this protocol extends the phenomenon of enzyme promiscuity.
首次报道了通过脂肪酶催化的多组分反应合成苯并[ g ]亚甲基衍生物。这种新颖有效的方法具有环境友好,产率高和后处理简单的优点。此外,该协议扩展了酶混杂现象。
Silica-bonded propylpiperazine-N-sulfamic acid as recyclable solid acid catalyst for preparation of 2-amino-3-cyano-4-aryl-5,10-dioxo- 5,10-dihydro-4H-benzo[g]chromenes and hydroxy-substituted naphthalene-1,4-dione derivatives
作者:Fahime Khorami、Hamid Reza Shaterian
DOI:10.1016/s1872-2067(12)60761-x
日期:2014.2
Abstract An efficient method for the synthesis of 2-amino-3-cyano-4-aryl-5,10-dioxo-5,10-dihydro-4 H -benzo[ g ]chromenes and hydroxy-substituted naphthalene-1,4-dione derivatives, usingsilica-bonded propylpiperazine- N -sulfamic acid as a solidacid, green, heterogeneous catalyst, under ambient and solvent-free conditions, is described. A simple procedure, high yields, short reaction time, safety