Oxide Solid–Solution Catalysts with Good Redox Properties for Liquid–Phase Aerobic Additive–Free Oxidation: A Review

ChemCatChem, Journal Year: 2024, Volume and Issue: 16(12)

Published: April 11, 2024

Abstract In this review, we discuss liquid–phase redox reactions using oxide solid–solution catalysts. These solid solutions are readily prepared by introducing various elements into the foundational metal template. Doping with species leads to formation of [MO x ] clusters unique coordination structures, which is a remarkable feature that deserves attention. Consequently, exhibit catalytic capabilities extend beyond those conventional metal–oxide Notably, these occasionally exceptional activities can be used catalyze reactions. Hence, conjecture connection exists between catalyst structure and activity. This review delves catalysts through lenses organic chemistry, catalysts, computational thereby collectively shaping our understanding prospects in field.

Language: Английский

CuI-Zeolite Catalysis for Biaryl Synthesis via Homocoupling Reactions of Phenols or Aryl Boronic Acids

Molecules, Journal Year: 2024, Volume and Issue: 29(23), P. 5552 - 5552

Published: Nov. 25, 2024

Due to the importance of biaryls as natural products, drugs, agrochemicals, dyes, or organic electronic materials, a green alternative biaryl synthesis has been developed based on easy-to-prepare and cheap copper(I)-exchanged zeolite catalysts. CuI-USY proved efficiently catalyze direct homocoupling either phenols aryl boronic acids under simple practical conditions. The CuI-USY-catalyzed oxidative could conveniently be performed air in warm methanol water with good high yields. In methanol, small amount Cs2CO3 was required, while none necessary water. best also without an additive. These mild conditions showed functional-group tolerance, leading variety substituted (hetero)biaryls (28 examples). heterogeneous catalyst readily recovered reused. Interestingly, vinyl successfully coupled Diels–Alder reaction, even one-pot process, allowing access highly functionalized cyclohexenes.

Language: Английский

Aerobic homocoupling of arylboronic acids using Cu-doped amorphous zirconia: impact of catalyst amorphousness on reaction efficiency

Catalysis Science & Technology, Journal Year: 2024, Volume and Issue: 14(19), P. 5545 - 5550

Published: Jan. 1, 2024

Homocoupling of arylboronic acids under additive-free and mild conditions has been developed with CuO/amorphous-ZrO 2 as a heterogeneous catalyst.

Language: Английский