سنتزوشناسایی تعدادی ازمشتقات بنزوکرومن درحضور کاتالیزور nano-sawdust-bf3
پایان نامه
- دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد یزد - دانشکده شیمی
- نویسنده ایمان زارع پور
- استاد راهنما بهاره صادقی سعیده هاشمیان
- سال انتشار 1393
چکیده
در این پروژه تعدادی از مشتقات بنزوکرومن با استفاده از واکنش سه جزئی بین ?-نفتول ، مالونونیتریل و مشتقات آلدهید در حضور نانوکاتالیست جدیدsawdust – bf3 nano – به عنوان کاتالیزورموثر انجام شد. محصولات توسط طیف های ir،1h-nmr ، 13c-nmr و نقطه ذوب شناسایی شدند. سایز و مشخصات ذرات کاتالیزور بوسیله تکنیک e-dax وsem بررسی شد.
منابع مشابه
BF3/nano-γ-Al2O3 Promoted Knoevenagel Condensation at Room Temperature
The Knoevenagel condensation of aromatic aldehydes with barbituric acid, dimedone and malononitrile occurred in the presence of BF3/nano-γ-Al2O3 at room temperature in ethanol. This catalyst is characterized by powder X-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA), field emission scanning electron microscopy (FESEM) and energy-disper...
متن کاملbf3/nano-γ-al2o3 promoted knoevenagel condensation at room temperature
the knoevenagel condensation of aromatic aldehydes with barbituric acid, dimedone and malononitrile occurred in the presence of bf3/nano-γ-al2o3 at room temperature in ethanol. this catalyst is characterized by powder x-ray diffraction (xrd), fourier transform infrared spectroscopy (ft-ir), thermal gravimetric analysis (tga), field emission scanning electron microscopy (fesem) and energy-disper...
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Nano-silica supported boron trifluoride (BF3.SiO2) is an efficient, reusable and eco-friendly catalyst for chemoselective thioacetalization of aldehydes and ketones. So, this catalyst was applied for transthioacetalization of acetals and acylals into their corresponding 1,3-dithiolanes or 1,3-dithianes in good to excellent yields. The reactions were carried out at room temperature under solven...
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The present study was undertaken to observe the chemical composition of different types of sawdust available in the urban and peri-urban areas of Chittagong, Bangladesh. Twenty different types of sawdust from different plants were collected from study areas. Chemical analyses of the samples were carried out in triplicate for moisture, dry matter (DM), metabolizable energy (ME), crude protein (C...
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Nano-silica supported boron trifluoride (BF3.SiO2) is an efficient, reusable and eco-friendly catalyst for chemoselective thioacetalization of aldehydes and ketones. So, this catalyst was applied for transthioacetalization of acetals and acylals into their corresponding 1,3-dithiolanes or 1,3-dithianes in good to excellent yields. The reactions were carried out at room temperature under solven...
متن کاملNano-BF3/cellulose as a biodegradable novel catalyst for synthesis of highly functionalized tetrahydropyridines
Nano-cellulose with high amount of free OH groups could be used as supporting agents for boron trifluoride (BF3). Nano-BF3/cellulose is a solid acid and a biodegradable catalyst which was prepared via reaction of nano-cellulose and BF3. The structure of this catalyst was studied by FT-IR, FESEM, TEM, XRD, EDS, TGA, XRF and BET. In this research, the synthesis of...
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دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد یزد - دانشکده شیمی
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