Hossein Paghandeh - Department of Science, Payame Noor University (PNU), PO Box.,۱۹۳۹۵-۴۶۹۷, Tehran, Iran
Hamid Saeidian - Department of Science, Payame Noor University (PNU), PO Box.,۱۹۳۹۵-۴۶۹۷, Tehran, Iran
Ebrahim Saeedian Moghadam - Chemistry and Chemical Engineering Research Center of Iran, PO Box ۱۴۳۳۵-۱۸۶, Tehran, Iran
Zohreh Mirjafary - Department of Chemistry, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran
Mohammad Ghaffarzadeh - Chemistry and Chemical Engineering Research Center of Iran, PO Box ۱۴۳۳۵-۱۸۶, Tehran, Iran

In the present study, a variety of dibenzo [b,f][۱,۴] 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 ۵۰ min. The superiority of the ultrasound irradiation over other methods in the synthesis of dibenzo [b,f][۱,۴] oxazepine derivatives is its low reaction temperature and operational simplicity in approximately same yields.

Dibenzo[b, f][۱, ۴]oxazepine Ultrasonic irradiation Sonocatalytic ability Catalyst-free reaction