Acid catalysis - Wikipedia
In acid catalysis and base catalysis, a chemical reaction is catalyzed by an acid or a base. By Brønsted–Lowry acid–base theory, the acid is the proton (hydrogen ion, H +) donor and the base is the proton acceptor. Typical reactions catalyzed by proton transfer are …
Recent advances in polyoxometalates acid-catalyzed organic …
2023年5月1日 · In this review, we described the recent advances (mainly from 2015 to 2022) of POMs acid-catalyzed organic reactions including the C C bond formation reactions, C N bond formation reactions, C O bond formation reactions, construction of heterocyclic reactions, cyanosilylation and hydrolysis reactions.
Acid‐catalyzed Disulfide‐mediated Reversible Polymerization for ...
2023年1月5日 · Acid can catalyze the reversible polymerization of cyclic disulfides, enabling a robust methodology that produces long poly (disulfide)s within a few minutes under open-air condition. High-yield chemical recycling from materials to monomers is achieved at gram scale, showing the capability of intrinsic dynamic polymers toward sustainable materials.
Acid-Catalyzed Oxy-aminomethylation of Styrenes | ACS Catalysis
2024年1月2日 · We report a strong Brønsted acid-catalyzed three-component oxy-aminomethylation of styrenes with sym-trioxane and sulfonamides or carbamates. This transformation provides a variety of 1,3-oxazinanes in moderate to good yields under mild reaction conditions.
Insights into kinetics and reaction mechanism of acid-catalyzed ...
2024年3月1日 · This work enriches the theoretical understanding of acid-catalyzed transesterification reactions and is of great significance for the development of highly active catalysts for diethyl oxalate synthesis, diminishing the industrial production cost of diethyl oxalate, and developing downstream bulk or high-value-added industrial products.
Asymmetric dearomatization catalysed by chiral Brønsted …
2021年10月11日 · Here we describe the realization of such a chiral Brønsted acid-catalysed CADA reaction of naphthol- and phenol-ynamides, which represents chiral Brønsted acid catalysis via the direct ...
Acids catalyze initiation processes in radical polymerization - Cell …
2024年3月14日 · In a recent issue of Nature Synthesis, Anastasaki and colleagues report the discovery that acids can catalyze the initiation process of radical polymerizations and exemplify advanced control over polymer architecture during reversible deactivation polymerization.
Privileged Brønsted acid organocatalysis | Nature Catalysis
2024年1月29日 · The Brønsted acid-catalysed direct Mannich reactions presented by Terada and co-workers provide an attractive way to construct β-aminoketones 7 under extremely mild conditions. The transformation...
Polyoxometalates-based heterogeneous catalysts in acid catalysis …
2021年5月20日 · In this review, we summarize recent progress on the design strategies of the POMs-based heterogeneous catalysts and their catalytic properties in acid-catalyzed reactions, where they are combined with functionalized cations, modified through covalent interactions, supported onto the non-precious metal support, and introduced into the framework ...
Acid‐Acid‐Catalyzed Tandem Reactions Driven by an …
2020年10月14日 · Acid-catalyzed tandem reactions with auto-tandem catalysis are effective for simplifying organic synthesis. However, some of the reported reactions were established based on the use of well-designed substrate with complex structure.