An efficient atom-economical chemoselective CO₂ cycloaddition using lanthanum oxide/tetrabutyl ammonium bromide

Abstract

The utilisation of CO2 into value-added products is accomplished through its cycloaddition reaction with epoxides.

An Amino-Decorated Self-Catenated Metal–Organic Framework for Efficient Capture and Conversion of CO2

“…The serious greenhouse effect will result in global warming, extreme weather, and species extinction. , On the other side, CO 2 is also a useful raw material to produce numerous chemicals and clean energy sources. − Thus, great efforts have been devoted to the development of new functional materials for selective capture and conversion of CO 2 in view of the environmental protection and energy sustainability. Cycloaddition of CO 2 with epoxides is regarded to be an effective method for chemical fixing of CO 2 , due to the high atom efficiency and producing valuable cyclic carbonates. − Versatile catalysts, including Schiff bases, zeolites, ionic liquids, and metal oxides, have been exploited for cycloaddition of CO 2 with epoxides. However, some long-standing issues, such as synthetic conditions, separation of products, and recycle of catalysts, still need to be further optimized.…”

“…Cycloaddition of CO 2 with epoxides is regarded to be an effective method for chemical fixing of CO 2 , due to the high atom efficiency and producing valuable cyclic carbonates. 6−8 Versatile catalysts, including Schiff bases, 9 zeolites, 10 ionic liquids, 11 and metal oxides, 12 have been exploited for cycloaddition of CO 2 with epoxides. However, some long-standing issues, such as synthetic conditions, separation of products, and recycle of catalysts, still need to be further optimized.…”

Exploration of catalytic performance of nano-La2O3 as an efficient catalyst for dihydropyrimidinone/thione synthesis and gas sensing

“…There are two fundamental types of semiconducting metal oxide sensors inclusive of n-type, whose majority carrier is electron, and p-type, whose majority carrier is hole. La 2 O 3 is an excellent material with p-type semiconduction being applied in diverse applications [24][25][26][27][28][29]. Various types of pure and fabricated semiconducting materials have been found to exhibit goodto-excellent sensing responses to different hazardous and greenhouse gases [30][31][32][33][34].…”

Sol-Gel Synthesis of Ceria-Zirconia-Based High-Entropy Oxides as High-Promotion Catalysts for the Synthesis of 1,2-Diketones from Aldehyde

“…Despite the appearance of ever-newer applications of ceria-based HEOs, there is no example of applying them as actual Lewis acid catalysts, even though each metal oxide on its own is well known as an efficient catalyst. This is striking because uncountable studies have already focused on the organic catalytic transformations promoted by cerium- [14], zirconium- [15], or lanthanum-based oxides [16] and their composites. Zirconium-based oxides seem to be the most attractive waterresistant Lewis acids to catalyze redox (MPVO) or coupling reactions under exceedingly mild reaction conditions [17].…”