High Catalytic Activity of Palladium(II)-Exchanged Mesoporous Sodalite and NaA Zeolite for Bulky Aryl Coupling Reactions: Reusability under Aerobic Conditions

✍ Scribed by Minkee Choi; Dong-Hwan Lee; Kyungsu Na; Byung-Woo Yu; Ryong Ryoo

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 319 KB
• Volume: 48
• Category: Article
• ISSN: 0044-8249
• DOI: 10.1002/anie.200806334

✦ Synopsis

Abstract

Exchange for the better: Mesoporous sodalite and NaA zeolite exchanged with Pd^2+^ exhibit remarkably high activity and reusability in CC coupling reactions under aerobic atmosphere. It is proposed that the catalytic reactions are mediated by a molecular Pd^0^ species generated in situ within the pores (see picture), which is oxidized back to Pd^2+^ by O~2~, preventing the formation of catalytically inactive Pd^0^ agglomerates.magnified image