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。
A Straightforward and Efficient Catalyst-free One-pot Synthesis of<i>N</i>-Acyl-1,3-diaryl-2-azaphenalene Derivatives via Multicomponent Reactions
would permit the condensation of the i ns itu generated o-QMs with nucleophiles other than phenols, we utilized urea, amides, and semicarbazide hydrochloride (to work as nucleophiles) to produce corresponding amidoalkyl and semicarbazonoalkyl naphthols. 12 In the present study, we report our results on a new type of multicomponent reaction where five molecules react to form a piperidine ring. Thus, aromati