A new, one-pot multicomponent reaction of two molecules of aromatic aldehydes with 2,7-naphthalenediol and ammonium hydrogen phosphate is described as an efficient and direct procedure for the preparation of novel 1,3-diphenyl-2-azaphenalene derivatives in a mixture of EtOH-H2O (3:1) under reflux conditions.
Fe
<sub>3</sub>
O
<sub>4</sub>
@
<scp>L</scp>
‐arginine magnetic nanoparticles: A novel and magnetically retrievable catalyst for the synthesis of 1′3‐diaryl‐2N‐azaphenalene
proves they are a novel magnetic catalyst without the use of heat and reflux for the synthesis of 1,3‐diaryl‐2‐N‐azaphenalene derivatives and n‐acyl‐1,3‐diaryl‐2‐N‐azaphenylene derivatives in a one‐pot pseudo‐five‐component condensation reaction of compounds of 2,7‐naphthalene diol, aldehydes, and ammonia derivatives (ammonium acetate or ammonium hydrogen phosphate) and solvent (water and alcohol) with
l-精氨酸包被的纳米Fe 3 O 4颗粒(Fe 3 O 4 @ l-精氨酸)的催化活性证明它们是一种新颖的磁性催化剂,无需加热和回流即可合成1,3-二芳基- 2- N-氮杂萘衍生物和n-酰基-1,3-二芳基-2- N一锅假五组分缩合反应中的二氮杂苯衍生物,由2,7-萘二醇,醛和氨衍生物(乙酸铵或磷酸氢铵)与溶剂(水和醇)组成,收率高,反应时间短反应时间短,经济且操作简单。通过傅立叶变换红外光谱(IR)和场发射扫描电子显微镜(FE-SEM)对获得的纳米颗粒的结构和磁性进行了表征。结果表明,合成的磁铁矿纳米颗粒的平均尺寸为约21nm。另外,该多相催化剂可以容易地磁性回收,并且可以在不显着损失其催化活性的情况下重新用于进一步的运行。