One-pot, clean and energy efficient synthesis of dibenzo[b,f][1,4]oxazepine derivatives promoted by ultrasound
محل انتشار: نشریه آسیایی شیمی سبز، دوره: 3، شماره: 1
سال انتشار: 1396
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 546
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شناسه ملی سند علمی:
JR_AJGC-3-1_001
تاریخ نمایه سازی: 22 اردیبهشت 1397
چکیده مقاله:
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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نویسندگان
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