nano sio2/h2so4 as catalyst for the beckmann rearrangement and deoximation of aldoximes
نویسندگان
چکیده
nano silica-h2so4 is an efficient and mild catalysis system for the regeneration of aldehyde from aldoximes. ketoximes are converted to amides by beckmann rearrangement in the presence of nano silica-h2so4. the reactions are carried out in solvent-free conditions under microwave irradiation (600 w) within 50-120 sec in good yields.
منابع مشابه
Nano SiO2/H2SO4 as catalyst for the Beckmann rearrangement and deoximation of aldoximes
Nano silica-H2SO4 is an efficient and mild catalysis system for the regeneration of aldehyde from aldoximes. Ketoximes are converted to amides by Beckmann rearrangement in the presence of nano silica-H2SO4. The reactions are carried out in solvent-free conditions under microwave irradiation (600 W) within 50-120 sec in good yields.
متن کاملNano SiO2/H2SO4 as catalyst for the Beckmann rearrangement and deoximation of aldoximes
Nano silica-H2SO4 is an efficient and mild catalysis system for the regeneration of aldehyde from aldoximes. Ketoximes are converted to amides by Beckmann rearrangement in the presence of nano silica-H2SO4. The reactions are carried out in solvent-free conditions under microwave irradiation (600 W) within 50-120 sec in good yields.
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Amide bond formation reactions are among the most important transformations in organic chemistry because of the widespread occurrence of amides in pharmaceuticals, natural products and biologically active compounds. The Beckmann rearrangement is a well-known method to generate secondary amides from ketoximes. However, under the acidic conditions commonly employed, aldoximes RHC=NOH rarely rearr...
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عنوان ژورنال:
iranian journal of catalysisناشر: islamic azad university, shahreza branch
ISSN 2252-0236
دوره 3
شماره 1 2013
کلمات کلیدی
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