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One-pot, clean and energy efficient synthesis of dibenzo[b,f][1,4]oxazepine derivatives promoted by ultrasound

نشریه آسیایی شیمی سبز، دوره: 3، شماره: 1
Year: 1396
COI: JR_AJGC-3-1_001
Language: EnglishView: 350
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Hossein Paghandeh - Department of Science, Payame Noor University (PNU),Tehran, Iran
Hamid Saeidian - Department of Science, Payame Noor University (PNU),Tehran, Iran
Ebrahim Saeedian Moghadam - Chemistry and Chemical Engineering Research Center of Iran, Tehran, Iran
Zohreh Mirjafary - Department of Chemistry, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran


In the present study, a variety of dibenzo [b,f][1,4] oxazepine derivatives was successfully synthesized in good yields under ultrasonic irradiation as an environmental friendly technique. This one-pot method is practically reliable, mild, catalyst-free, and inexpensive. Ultrasonic irradiation on the reaction mixture leads to fine emulsion between the reactants and violent collapses of a lot of cavitation bubbles in less than a microsecond releases extreme heat, leading to cross the activation energy barrier. In the absence of ultrasonic irradiation, a trace amount of the product was formed after 50 min. The superiority of the ultrasound irradiation over other methods in the synthesis of dibenzo [b,f][1,4] oxazepine derivatives is its low reaction temperature and operational simplicity in approximately same yields.


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Paghandeh, Hossein and Saeidian, Hamid and Saeedian Moghadam, Ebrahim and Mirjafary, Zohreh,1396,One-pot, clean and energy efficient synthesis of dibenzo[b,f][1,4]oxazepine derivatives promoted by ultrasound,

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