Journal
GREEN CHEMISTRY LETTERS AND REVIEWS
Volume 13, Issue 2, Pages 141-154Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17518253.2020.1737250
Keywords
CoCl2N,N '-(1,2-phenylene)bis(2-aminobenzamide)/Al-SBA-15; ultrasonic irradiation; 3-cinnamoyl coumarin; mesoporous; reusable catalyst; organic-inorganic hybrid
Funding
- Kashan University
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A novel mesoporous Al-SBA-15 modified by N,N'-(1,2-phenylene)bis(2-aminobenzamide) dichloro cobalt has been prepared and applied as a reusable catalyst in the 3-cinnamoyl coumarins synthesis via three-component reaction between benzaldehydes, salicylaldehydes and ethyl acetoacetate by the assist of ultrasonic irradiation. By using of the nanocatalyst and also ultrasound irradiation, the easiness and velocity of the abovementioned reaction were enhanced and an environment friendly condition was provided to synthesis of various 3-cinnamoyl coumarin compounds. The properties and structure of nanocatalyst have been specified by methods including powder X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), nitrogen adsorption-desorption analysis and scanning electronic microscopy (SEM). Superiority of this novel and viable method is due to mild reaction condition, short reaction times, high yields of 3-cinnamoyl coumarins, environmentally benign, recoverability of the CoCl2N,N'-(1,2-phenylene)bis(2-aminobenzamide)/Al-SBA-15 catalyst and reusability with important preservation in its catalytic activity. [GRAPHICS]
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