Application of Horsetail and Horsetail Ash as a Novel Natural Lewis Acid Catalyst for the One‐Pot Synthesis of 2-Amino-4H-Chromene Derivatives

Publish Year: 1397
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

IRANCC20_298

تاریخ نمایه سازی: 28 اردیبهشت 1398

Abstract:

The present study offered an introduction of horsetail plant with its unique properties. It is a source of silica and is reported to contain active components such as phenolic acids (e.g., ascorbic acids, ferulic acids, silicilic acids, malic acids, caffeic acids, gallic acids, pectic acids and tannic acids), saponins, flavonoids, and it also contains minerals such as silicon and silicates, potassium, calcium, aluminum, sulfur, magnesium, manganese, zinc, chrome and cobalt [1]. The exposure of horsetail to a high temperature resulted in the production of the horsetail ash containing better properties and benefits rather than the horsetail itself.One of the most common MCRs that produces an interesting class of oxygen heterocyclic compounds is 2-amino-4H-chromene derivatives synthesis, having attractive pharmacological and biological activities, such as antitumor [2]. The results have shown that both horsetail and horsetail ash could act as bench top solid acid catalytic systems. Therefore, in order to make a comparison between their catalytic activities they were each employed for the first time in the organic reaction to synthesize the 2-Amino-4H-Chromene derivatives from the reaction of dimedone 1, malononitrile 2 and aromatic aldehydes3 under solvent-free conditions (Fig. 1).

Authors

Nina Hosseini Mohtasham

Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran

Mostafa Gholizadeh

Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran