Identifying the true catalyst : a Mn(II) salt versus Mn(II) complexes in epoxidation with m-chloroperbenzoic acid

Savić, Milica (avtor), Mitrović, Aleksandra (avtor), Čobeljić, Božidar R. (avtor), Pevec, Andrej (avtor), Zlatar, Matija (avtor), Gruden-Pavlović, Maja (avtor), Browne, Wesley R. (avtor), Di Berto Mancini, Marika (avtor)

The oxidant meta-chloroperbenzoic acid (m-CPBA) is used widely for the epoxidation of alkenes, yet its efficiency is often limited under ambient conditions. This study investigates the catalytic activity of a Mn(II) salt and mononuclear Mn(II) complexes, two of which are reported here for the first time, in the epoxidation of alkenes with m-CPBA under ambient conditions. Time-resolved Raman spectroscopy is used to monitor substrate conversion, oxidant consumption, and product formation. The data reveal that simple Mn(II) salts exhibit significantly higher catalytic activity than Mn(II) complexes, indicating that ligand coordination inhibits the reactivity of the manganese center. The catalytic efficiency of Mn(II) perchlorate is particularly notable, achieving near-complete oxidation of styrene within minutes under mild conditions. Furthermore, epoxidation of a range of alkenes demonstrates that Mn(II) salts provide broad substrate scope and high selectivity. These findings suggest that simple Mn(II) salts can serve as highly efficient and cost-effective catalysts in alkene epoxidations with m-CPBA.

• Jezik: Angleški jezik
• Ključne besede: catalysis, epoxidations, manganese, perbenzoic acid, Raman spectroscopy
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FKKT - Fakulteta za kemijo in kemijsko tehnologijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Datum objave: 19.08.2025
• Leto izida: 2025
• Št. strani: 9 str.
• Številčenje: Vol. 28, iss. 30, art. e202500432
• PID: 20.500.12556/RUL-174627
• UDK: 546.712:544.47
• ISSN pri članku: 1434-193X
• DOI: 10.1002/ejoc.202500432
• COBISS.SI-ID: 251610371
• Datum objave v RUL: 08.10.2025

Gradivo je del revije

• Naslov: European journal of organic chemistry
• Založnik: Wiley, Chemistry Europe
• ISSN: 1434-193X
• COBISS.SI-ID: 18135045

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: kataliza, epoksidacije, mangan, peroksibenzojska kislina, Ramanska spektroskopija