Multi-wall carbon nanotube supported Co (II) Schiff base complex: an efficient and highly reusable catalyst for synthesis of 1-amidoalkyl-2-naphthol and tetrahydrobenzo[<em>bem>]pyran derivatives
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- 作者：Jamshid Rakhtshah and Sadegh Salehzadeh
- 刊名：Applied Organometallic Chemistry
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：31
- 期：2
- 全文大小：2292K
- ISSN：1099-0739
文摘
An immobilized Co (II) Schiff base complex supported on multi-wall erm6">carbon nanotubes was synthesized and characterized using Fourier transform erm6">infrared spectroscopy, X-ray diffraction, scanning erm6">electron microscopy, ef="http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=9&cad=rja&uact=8&ved=0CDoQFjAI&url=http%3A%2F%2Fen.wikipedia.org%2Fwiki%2FEnergy-dispersive_X-ray_spectroscopy&ei=8whJVfW_KMv4UJvQgOAH&usg=AFQjCNGukh_d_Co5x-jjjV9UjtGctkEYiA&sig2=ZreZksv_Yb7i3fliKYAfjg&bvm=bv.92291466,d.bGQ" title="Link to external resource: http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=9&cad=rja&uact=8&ved=0CDoQFjAI&url=http%3A%2F%2Fen.wikipedia.org%2Fwiki%2FEnergy-dispersive_X-ray_spectroscopy&ei=8whJVfW_KMv4UJvQgOAH&usg=AFQjCNGukh_d_Co5x-jjjV9UjtGctkEYiA&sig2=ZreZksv_Yb7i3fliKYAfjg&bvm=bv.92291466,d.bGQ" target="_blank">energy-dispersive X-ray spectroscopy, thermogravimetric analysis and erm6">inductively coupled plasma erm6">mass spectrometry. It was shown that the supported complex is a facile, eco-friendly, recyclable, reusable and green catalyst for three-component condensation of ey.com/namespaces/wiley" xmlns:cr="urn://wiley-online-library/content/render" xmlns:mml="http://www.w3.org/1998/Math/MathML" id="aoc3560-eo-2001">erm3">2-naphthol and acetamide with various aldehydes for the synthesis of 1-amidoalkyl-2-naphthol derivatives under solvent-free conditions. Also, in a further study, the catalytic application was studied in the synthesis of tetrahydrobenzo[<em>bem>]pyran derivatives via the erm4">condensation reaction of ey.com/namespaces/wiley" xmlns:cr="urn://wiley-online-library/content/render" xmlns:mml="http://www.w3.org/1998/Math/MathML" id="aoc3560-eo-2002">erm1 TH_term3">malononitrile and ey.com/namespaces/wiley" xmlns:cr="urn://wiley-online-library/content/render" xmlns:mml="http://www.w3.org/1998/Math/MathML" id="aoc3560-eo-2003">erm3">dimedone with several aromatic aldehydes. The procedures suggested here for the synthesis of 1-amidoalkyl-2-naphthol and tetrahydrobenzo[<em>bem>]pyran derivatives offer several advantages, such as stability, recyclability and eco-friendliness of the catalyst, simple experimental conditions, short reaction times, high to excellent yields and easy work-up.