Bifunctional Platinum‐Incorporated Polyoxoniobate Derived Catalyst for N‐formylation of Piperidine Using CO2. Issue 2 (13th October 2022)

• Record Type: Journal Article
• Authors: Chudatemiya, Vorakit; Kikkawa, Soichi; Hirayama, Jun; Takahata, Ryo; Teranishi, Toshiharu; Tamura, Masazumi; Yamazoe, Seiji
• Is Part Of: Asian journal of organic chemistry. Volume 12:Issue 2(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-10-13
• Subjects: Bifunctional catalysis -- N-formylation -- Metal oxide cluster -- CO2 utilization -- Base catalyst; Chemistry, Organic -- Periodicals; Organic compounds -- Synthesis -- Periodicals; 547.005
• DOI: 10.1002/ajoc.202200521
• Languages: English
• ISSNs: 2193-5807

Abstract

Abstract: Alkaline salt of platinum‐incorporated heteropolyoxoniobate [Pt(Nb6 O19 )2 ] 12− (Pt(Nb6)2 ) was fabricated and applied for N ‐formylation of various amines including piperidine under CO2 and H2 atmosphere. Pt(Nb6)2 achieved the selective formation of 1‐formylpiperidine, whereas the absence of Pt species, H2, and CO2 resulted in a trace amount of the product. The structural characterization revealed that the sandwich‐type structure of Pt(Nb6)2 was transformed into Pt nanoparticles incorporated with polyoxoniobates ([Nb6 O19 ] 8− ) on the NbOx bulk matrix (NbPOM‐PtNPs/NbOx ) under reaction conditions. The N ‐formylation of amines in the presence of CO2 and H2 proceeded by the bifunctional NbPOM‐PtNPs/NbOx where the basic sites of [Nb6 O19 ] 8− and the redox property of Pt promoted the generation of formamides. Abstract : The catalytic properties of alkaline salts of sandwich‐type [Pt(Nb6 O19 )2 ] 12− ((Pt(Nb6)2 ) were elucidated by N ‐formylation of amines under CO2 and H2, which resulted in highly selective formamides. After reactions, a formation of Pt nanoparticles and incorporated with [Nb6 O19 ] 8− clusters on NbOx support (NbPOM‐PtNPs/NbOx ) occurred, which acted as the bifunctional catalyst for N ‐formylation of amines using CO2 as a carbonyl source.