A concise synthesis of furo[3,2-c]coumarins catalyzed by nanocrystalline ZnZr4(PO4)6 ceramics under microwave irradiation

MNPs‐NHC6H4SO3H as high‐performance catalyst for the synthesis of 1,4‐diazepines containing tetrazole ring under microwave irradiation

“…The reaction mixture is heated from the inside since the microwave energy is transferred directly to the reagents. The solid catalysts absorb microwave irradiation, and so they can serve as an internal heat source for the reactions …”

“…The solid catalysts absorb microwave irradiation, and so they can serve as an internal heat source for the reactions. [28,29] Reusability of the catalysts is one of the important properties of a catalyst used in large-scale production. Therefore, the reusability of the heterogeneous catalyst was explored All melting points are uncorrected and were determined in capillary tubes on a Boetius melting point microscope.…”

One-Pot Synthesis of 4H-Pyrano[3,2-c]coumarin Derivatives Catalyzed by Deep Eutectic Solvent

“…[21] In addition, tetrabutylammonium bromide (TBAB) can be used to catalyze the reaction of 4-hydroxycoumarin with ethyl benzylidenecyanoacetate to synthesize pyrano [3,2-c] coumarin derivatives (Scheme 2b). [22] There have been many related reports on synthetic methods for these compounds using many catalysts, such as metal catalysts (Fe, Cu, Pd), [23][24][25][26][27][28] NaBr, [29] ZnO, [30][31][32] hexamethylenetetramine, [33] and potassium phthalimide. [34] The major disadvantages to using these catalysts are unsatisfactory yields, long reaction times, complicated operations, and high cost.…”

Engineered N-doped graphene quantum dots/CoFe2O4 spherical composites as a robust and retrievable catalyst: fabrication, characterization, and catalytic performance investigation in microwave-assisted synthesis of quinoline-3-carbonitrile derivatives

“…Hence, microwave-assisted (MW-assisted) organic synthesis has had a signicant impact on organic synthesis as well as on the way that researchers approach it. 32 The main goal of this study, the design, formation, and identication of N-GQDs/CoFe 2 O 4 nanocomposites as a novel, stable, efficient, and recoverable catalyst, is reported for the synthesis of quinoline-3-carbonitrile derivatives, with investigation of the main factors which enable control of its catalytic performance. The catalytic performance results have shown that spherical morphology had the most catalytic activity due to the large surface area of the CoFe 2 O 4 spherical nanocomposite.…”

“…Hence, microwave-assisted (MW-assisted) organic synthesis has had a significant impact on organic synthesis as well as on the way that researchers approach it. 32 …”