Ultrasound-promoted synthesis of a copper-iron-based catalyst for the microwave-assisted acyloxylation of 1,4-dioxane and cyclohexene

• Published in: Organic & biomolecular chemistry Vol. 21; no. 3; pp. 59 - 599
• Main Authors: Macías-Benítez, Pablo, Sierra-Padilla, Alfonso, Yeste, M. Pilar, Palacios-Santander, José María, Cubillana-Aguilera, Laura, Gatica, José M, Vidal, Hilario, Guerra, Francisco M, Moreno-Dorado, F. Javier
• Format: Journal Article
• Language: English
• Published: CAMBRIDGE Royal Soc Chemistry 18.01.2023; Royal Society of Chemistry
• Subjects: Atomic emission spectroscopy; Catalysts; Catalytic activity; Chemical synthesis; Chemistry; Chemistry, Organic; Copper; Copper - chemistry; Coprecipitation; Cyclohexene; Cyclohexenes; Emission analysis; Heat treatment; Inductively coupled plasma; Iron; Irradiation; Low temperature; Microwave radiation; Microwaves; Physical Sciences; Science & Technology; Sonication; Ultrasound; OXIDATIONS; NANOPARTICLES; HETEROGENEOUS CATALYSIS; MECHANISM; BOND; ESTERS
• ISSN: 1477-0520; 1477-0539
• DOI: 10.1039/d2ob02117j

A copper-iron-based catalyst has been prepared by a low-temperature co-precipitation and sonication method. The use of high-energy ultrasound reduces the time required for the preparation process from one workweek to one day with respect to the catalysts obtained by conventional coprecipitation and thermal treatment methods. The resulting material has been characterized at compositional, textural, structural, and chemical levels by ICP-AES, BET, SEM-EDS, XRD, TEM, and FTIR among other techniques. The material shows catalytic activity in the acyloxylation reaction of 1,4-dioxane and cyclohexene under microwave irradiation. In parallel with the optimized catalyst synthesis, the use of microwaves allowed for a substantial improvement in the outcome of the reaction in terms of cleanliness, yield, and time. A copper-iron-based catalyst has been prepared by a low-temperature co-precipitation and sonication method. The material shows catalytic activity in the acyloxylation reaction of 1,4-dioxane and cyclohexene under microwave irradiation.